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Number: 350-021Passing Score: 800Time Limit: 120 minFile Version: 8.0

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CertifyMe 350-021

Exam A

QUESTION 1A router is set to boot from flash, but cannot find boot commands in the configuration. Also, valid files do notexist in the default flash device. The router will:

A. Boot from ROM, since there are no valid sourcesB. Try to boot from the network, using a default filenameC. Terminate the boot process with an error messageD. Try to boot from the network, then boot from ROM as a backup

Correct Answer: DSection: (none)Explanation

Explanation/Reference:

QUESTION 2A network administrator is using debug commands to check the performance of a network. What steps can theadministrator take to ensure that the "debug" will not require too much CPU, or at least that she will not have toreboot the router to disable debug? (multiple answer)

A. Make the debug command as specific as possibleB. Use the max-time parameter of the debug commandC. In configuration mode, enter scheduler interval 15D. Configure a loopback to channel debug traffic

Correct Answer: ACSection: (none)Explanation


QUESTION 3If there are two different headends with two different frequencies available sharing the same plant, whatfrequency will the two groups of cable modems, which are brand new, and have never been on-line, lock on?

A. They will lock on the frequency configured on the linecard.B. They will lock on the frequency configured on the upconverter.C. They will lock on the first frequency they find.D. They will lock on the lowest frequency.E. They will lock on the last frequency remembered in ram.

Correct Answer: CSection: (none)Explanation


QUESTION 4Which are HFC cable television forward path networks aligned to provide? (multiple answer)


A. For asymmetrical gain since the downstream and upstream bandwidths are also asymmetricalB. For unity gain with a fixed input level and varying output levels adjusted by the selection of a fixed value

attenuator and equalizer at the output stage in each of the forward amplifiers in the networkC. For unity gain with a fixed output level and varying input levels adjusted by the selection of a fixed value

attenuator & equalizer at the input stage of each of the forward amplifiers in the networkD. It is not necessary to align the forward path amplifiers since the CMTS will automatically compensate for

forward path gain discrepancies.E. For unity gain and are level compensated by automatic gain and slope control systems utilizing RF pilot

reference carriers

Correct Answer: CESection: (none)Explanation


QUESTION 5HFC cable television return path networks are aligned to provide: (multiple answer)

A. Asymmetrical gain since the downstream and upstream bandwidths are also asymmetricalB. Unity gain with a fixed input level and varying output levels adjusted by the selection of a fixed value

attenuator and equalizer at the output stage in each of the return amplifiers in the networkC. Unity gain with a fixed output level and varying input levels adjusted by the selection of a fixed value

attenuator and equalizer at the input stage of each of the return amplifiers in the networkD. Cable modems the ability to power range comfortably within their output power dynamic rangeE. It is not necessary to align the return path amplifiers since the CMTS will automatically adjust the cable

modem transmit power levels.

Correct Answer: BDSection: (none)Explanation


QUESTION 6Cisco recommends the use of a headend-grade coaxial cable or a quad-shield coaxial cable with a minimum of60% + 40% braid and double foil insulation to connect the cable modem cards to the HFC network. The centerconductor must be straight and extend 1/8 inch (3.2 mm) beyond the end of the connector, and the connectorshould be securely crimped to the cable. Select three recommended cable types that can be used to connectthe Cisco uBR7200 series universal broadband routers: (multiple answer)

A. RG 58B. RG 59C. RG 59/U

D. RG 6E. RG 7

Correct Answer: BCDSection: (none)Explanation


QUESTION 7Given a PAL HFC and 8 MHz channel lineup in the downstream, is it possible to utilize 6 MHz DOCSIS cablemodems and signals on the network?

A. No, only 8 MHz channel spacing is available for Downstream data signalsB. Yes, as long as the 6 MHz DOCSIS signal is within a valid 8 MHz channelC. Yes, as long as the DOCSIS signal is upconverted through a PAL upconverterD. No, DOCSIS cannot be mixed with EuroDOCSIS in the DonwstreamE. DOCSIS must be used only in an EIA-542 channel plans

Correct Answer: BSection: (none)Explanation


QUESTION 8In a cable HFC plant, which devices are modulators? (multiple answer)

A. CMTS line cardB. UpconverterC. Diplex filterD. Set top boxE. Fiber node

Correct Answer: ADSection: (none)Explanation


QUESTION 9Unity gain is being used for alignment. The first amplifier from the node has 25 dB of gain and is 2000 feetaway with cable loss of 1 dB per 100 feet. The node has an output of 35 dBmV at 55.25 MHz. What is the inputat the amplifier?

A. 13dBmVB. 3dBmVC. 15dBmVD. 27dBmV

Correct Answer: CSection: (none)

Explanation


QUESTION 10There are two different headends with two different frequencies available sharing the same plant. There is a -10dB cable loss to the second active in the cascade. What is the required pad for balancing

A. A 0 padB. A 1 padC. A 2 padD. A 3 padE. A 4 padF. A 5 pad

Correct Answer: FSection: (none)Explanation


QUESTION 11A DOCSIS 2-way data system is being designedto limit upstream traffic. Unknown modems should be keptfrom using precious Upstream bandwidth. Given these requirements, it should beensured that the DOCSISconfiguration file has what set?

A. Vendor-specific information fieldB. Max-cpe should be set to 1C. CMTS authentication field should be setD. Network Access should be set to 0E. Downstream frequency should be set above 450 MHz



QUESTION 12The name of the DOCSIS config file to download will be offered to the cable modem in what DHCP field?

A. giaddrB. config-filenameC. packet-filenameD. siaddr



QUESTION 13Every time a typing mistake is made at the exec prompt of a router, the message from the router indicates alookup is being performed. Also, there is a waiting period of several seconds before the next command can betyped. Can this behavior be changed?

A. No, this is a built in feature of Cisco IOS? software.B. Yes, use the no ip domain-lookup command.C. Yes, use the no ip helper-address command.D. Yes, use the no ip multicast helper-map command.E. Yes, use the no exec lookup command.



QUESTION 14Upon deleting an IOS image file from flash, an execution of show flash shows the file still in flash, with a 'D'preceding it (as shown in the exhibit). What step must be taken in order to remove the file completely?

A. Erase the file from flashB. Format the flash deviceC. Replace the flash card - it is defectiveD. Execute a squeeze command on the flash device



QUESTION 15What effect will this configuration command have?line vty 0 4no password vtypassword

A. All telnet connections to the router will be denied.B. Only one telnet connection at the router will be allowed at a time.C. Virtual terminal sessions will not be able to enter enable mode.D. Virtual terminal sessions will not be asked a user-level password.E. It will have no effect.

Correct Answer: ASection: (none)Explanation


QUESTION 16For an OC-48 signal (2.5Gb/s), what is the BER (bit error rate) if there is 1 bit error every four days?

A. 10E-12B. 10E-13C. 10E-14D. 10E-15E. 10E-16



QUESTION 17

For communications systems what describes the over-all health of the system?

A. Bit-Error-Rate (BER)B. Synchronous Optical NETwork (SONET)C. Optical Signal to Noise Ratio (OSNR)D. None of the above



QUESTION 18What is NOT an ATM class of service?

A. CBRB. VBR-tC. ABRD. UBRE. CAR

Correct Answer: ESection: (none)Explanation


QUESTION 19What describes a technique, used to encapsulate voice (NOT data) over ATM?

A. RFC 1483B. LANEC. AAL-1D. RFC 1577



QUESTION 20What is the purpose of rate decoupling for ATM transmission?

A. It provides transparency between SONET and SDH.B. It converts higher-speed DS3/E3 to lower-speed optical rates.C. It processess the packing and unpacking of frames into 53-octet cells.D. It allows lower-speed traffic on an ATM facility without causing traffic gaps.

Correct Answer: DSection: (none)

Explanation


QUESTION 21The ATM reference model is composed of which ATM layers? (multiple answer)

A. ATM layerB. Physical layerC. Modular layerD. ATM adaptation layer

Correct Answer: ABDSection: (none)Explanation


QUESTION 22What mechanism should be employed to limit the "transmit rate" from Router A to Router C?

A. Committed Access RateB. Traffic ShapingC. Weighted Fair QueuingD. Packet Classifcation w/ Weighted Fair QueuingE. None of the Above



QUESTION 23Router A has a 512K-access port into the frame relay cloud. Router B has 128K-access port into the framerelay cloud. The two routers are connected with symmetrical PVCs that are configured for 64K committedinformation rate (CIR). What Frame Relay Traffic Shaping map-class sub-command should be entered on

Router A to prevent workstation A from overrunning the access port on Router B?

A. frame-relay traffic-rate 128000 512000B. frame-relay traffic-rate 64000 512000C. frame-relay traffic-rate 512000 64000D. frame-relay traffic-rate 128000 64000E. frame-relay traffic-rate 64000 128000



QUESTION 24The CLI command "show cable hop":(multiple answer)

A. Indicates corrected and uncorrected errors in the upstream.B. Indicates power level and upstream SNR.C. Identifies the upstream receiver port that is supporting the modems causing customer service calls.D. Indicates that cable modem is at maximum power level.E. Identifies manufacturer of the cable modem, and associated MAC address.



QUESTION 25In this diagram, Host G is attempting to send a packet to Host A through Router E. All routers are runningEIGRP, and Router E has installed the following route in its routing table:1.1.0/24 via router FWhat will occurwhen Router E receives packets from Host G that are destined for Host A?

A. E cannot have a route to 10.1.1.0/24 through F; so it will always choose the path through C.B. This is a routing loop; E will forward the traffic to F, and F will send the traffic back to E.C. Router E will forward the traffic to Router F.D. Router E will forward the traffic to Router F and send a 'host not reachable this direction' ICMP packet to

Host G.E. Router E will forward the traffic to Router F and send an ICMP redirect to Host G.



QUESTION 26Routers E and F are running HSRP (Hot Standby Router Protocol). Router E has a higher priority, and bothrouters have standby preempt configured. Since Router E is normally the active router, what IP address shouldHost G use for its default gateway?

A. 10.1.3.1B. Router E's IP address, since it is normally active; Router F will take over Router E's address if it fails.C. Router F's IP address; the active router will take over the standby router's IP address until it failsD. The virtual address configured when enabling HSRPE. The virtual address assigned by HSRP; this address is dependent on the group number configured



QUESTION 27Which can occur if cables other than those recommended for connecting the uBR7200 series cable modemline card(s) to the HFC network are used? (multiple answer)

A. The modulation error ratio (MER) will increase.B. The carrier-to-noise ratio (CNR) will increase.C. The line card F connectors may be damaged.D. Co-channel interference may occur in long, parallel cable runs.E. Common mode currents will occur on the outer surface of the cable shield.

Correct Answer: CDSection: (none)Explanation


QUESTION 28When using IS-IS for IP routing, Dual IS-IS defined by RFC 1195, what is true? (multiple answer)

A. It is necessary to configure a NSAP address.B. It is not possible to perform both IP and CLNS routing wih the same process.C. IP address and subnet information is carried in the TLV field on the L-1/L-1 LSPs.D. Dual IS-IS does not support VLSM information.



QUESTION 29To eliminate the need for adjacent routers on broadcast networks to form n(n-1)/2 adjacencies, IS-IS defines apseudonode or Designated Intermediate System, DIS. All router on the broadcast medium form an adjacencywith the DIS. The Backup DIS is called:

A. Redundant DISB. BDRC. There is no concept of a backup DIS in IS-ISD. Designated Redundant System



QUESTION 30The configuration shown is for a RateMux in a Motorola headend feeding anIRT while remapping inputs from SA MDR feeds. What statement is true concerning this configuration?

A. The packet gap must be 0.B. The PSIRate must be 700.C. The CA Sys_ID must be 47 49.D. The NULL value must be 400k.



QUESTION 31Program PID=0 is always:

A. PATB. PMTC. CATD. NITE. EMM



QUESTION 32In a reorganization, OSPF areas are realigned. Is this a valid network design? If not, which changes could bemade to the network and/or router configurations? (multiple answer)

A. No changes are necessary.B. A virtual link could be configured between Area 60 and Area 0.C. A serial line or other physical connection could be installed between devices in Area 60 and Area 0.D. Router B could be configured as an Area Border Router between Area 60 and Area 6.E. This is not a valid design, and no changes can make it work.

Correct Answer: BCSection: (none)Explanation


QUESTION 33Based on the information above, which OSPF configurations listed are valid? (multiple answer)

A. routerArouter ospf 1network 14.0.0.0 0.255.255.255 area 0routerBrouter ospf 1network 14.0.0.00.255.255.255 area 0

B. routerArouter ospf 1network 14.1.1.0 0.0.0.255 area 0routerBrouter ospf 2network 14.1.1.0 0.0.0.255 area 0C. routerArouter ospf 1network 14.0.0.0 0.0.255.255 area 0routerBrouter ospf 1network 14.1.0.0 0.0.0.255

area 0D. routerArouter ospf 1network 14.1.1.0 0.0.0.255 area 1routerBrouter ospf 1network 14.1.0.0 0.0.255.255

area 0

Correct Answer: ABSection: (none)Explanation


QUESTION 34How should OSPF be configured on Router B?

A. router ospfnetwork 108.3.0.0B. router ospf 1network 108.3.100.0 0.0.0.255 area 6network 108.3.2.0 0.0.0.255 area 6C. router ospf 1network 108.3.100.0 0.0.0.255 area 6network 108.3.2.0 0.0.0.255 area 0D. router ospf 1network 108.3.100.0 255.255.255.0 area 6network 108.3.2.0 255.255.255.0 area 6E. router ospf 1network 108.3.1.0 0.0.0.255 area 6network 108.3.100.0 0.0.0.255 area 6network 108.3.2.0

0.0.0.255 area 6



QUESTION 35A router is set up to redistribute routing updates from OSPF to RIP. What answer best describes issues thenetwork administrator needs to be aware of?

A. Split Horizon, Poison Reverse, HolddownB. Slow convergence, limited hop-count metric, lack of network mask information, periodic broadcastsC. None, OSPF is a link-state routing protocol which overcomes issues found in RIP.D. Difference in metrics (e.g. hops vs. cost), subnet mask allocation/addressing (e.g. VLSM vs. fixed subnet

mask length), routing protocol summarization (e.g. network boundaries)



QUESTION 36

A router has the above routes listed in its routing table and receives a packetdestined for 172.16.0.45. What will happen?

A. The router will not forward this packet, since it is destined for the 0 subnet.B. The router will forward the packet through 172.31.116.65, since it has the lowest metric.C. The router will forward the packet through 10.1.1.1.D. The router will forward the packet through 172.31.116.65, since it has the lowest administrative distance.E. The router will forward the packet through 192.168.1.4.



QUESTION 37Which addresses below are appropriate supernets to contain the addresses shown in the exhibit? (multipleanswer)

A. 192.168.0.0/16B. 192.168.0.0/19C. 192.168.32.0/19D. 192.168.1.0/24



QUESTION 38According to the diagram, what attribute is initiated by AS200 (IBGP) to give preference to the path A or Dtraffic will take when going from AS200 to AS100? What attribute is initiated by AS200 (EBGP) to givepreference to the path B or C traffic will take when going from AS100 to AS200?

A. MED; OriginB. MED; Local PreferenceC. Community; OriginD. Local Preference; MEDE. Origin; Community



QUESTION 39Customers green and blue must communicate with each other. Which condition is required?

A. Customer Blue and Customer Green must use BGP for routing to the Internet.B. Customer Blue and Customer Green must use unique addresses in their corporate networks.C. All Service Provider routers must use BGP.D. The Service Provider must provide BGP Peering to another Service Provider.



QUESTION 40BGP can implement a policy of 'Route Dampening' to control route instability. What statement about routedampening is NOT correct?

A. A numeric penalty is applied to a route each time it flaps.B. The penalty is exponentially decayed according to parameters, such as half-life-time.C. The history of unstable routes is forwarded back to the sender to control future updates.D. The route is eventually suppressed based on a configurable 'suppress limit'.



QUESTION 41In BGP, why should a Route Reflector be used?

A. To overcome issues of split-horizon within BGPB. To reduce the number of External BGP peers by allowing updates to reflect without the need to be fully

meshedC. To allow the router to reflect updates from one Internal BGP speaker to another without the need to be fully

meshed

D. To divide Autonomous Systems into mini-Autonomous Systems, allowing the reduction in the number ofpeers

E. None of the above



QUESTION 42If a host sends a TCP segment with the RST flag set, it means:

A. The receiver should send all data in the reassembly buffer to the application receiving it immediately.B. The receiver should reset the session.C. Any routers between the source and destination hosts should reset the state of the connection in their

buffers.D. The receiver should make certain its send buffer is pushed onto the wire.



QUESTION 43The "show controllers cable x/y upstreram x" command does not detect impulse noise because:

A. It does measure impulse noise but it is an estimate.B. Ingress is measured in microseconds and can't be detected.C. Ingress is measured in milliseconds and can't be detected.D. Impulse is measured in microseconds and can't be detected.E. Impulse noise is detected but based on an average.



QUESTION 44In the "show cable flap-list" what issues can causes a flap to be incremented? (multiple answer)

A. "hit" followed by a "miss"B. Modem keeps trying to quickly reregisterC. Cable modem goes offlineD. After six consecutive missesE. "miss" followed by a "hit"

Correct Answer: BDESection: (none)Explanation


QUESTION 45What would be the best method for determining the cause of CPEs not getting provisioned an address?

A. Turn on "debug ip dhcp" in the uBR for all DHCP requestsB. At the failing modem issue the command "debug cable mac log"C. Check the uBR's system log for errorsD. Make sure the MAC address is populated within client-class-processingE. Monitor the DHCP log file in CNR



QUESTION 46What command on the Ubr7246 can help find the possibility of a problem with ingress noise on cable x/yupstream? (multiple answer)

A. Show controller cable x/y upstream zB. Debug cable mac log verboseC. Debug cable modulationD. Show cable hopE. Show int cable x/y upstream z

Correct Answer: ADESection: (none)Explanation


QUESTION 47How can decreasing the interleave-depth value effect performance?

A. It increase the time to transmit a packet.B. It decreases the upstream transmission rate.C. It reduces the time needed to transmit a packet.D. It increases the downstream transmission rate.E. It increases the time between transmission of a MAP packet



QUESTION 48In the exhibit, the cable modem 00e0.6f00.6ef6 is "flapping" likely due to:

A. The cable modem RF power adjustments caused by intermittent return path gainB. Excessive "Hits" and cable modem RF power adjustments caused by intermittent return path gainC. Poor forward path signal level or carrier to noise ratio.D. Excessive "Hits" and cable RF power adjustments due to intermittent downstream gainE. None of the above



QUESTION 49How can you buffer upstream grants instead of dropping packets causing TCP retransmissions

A. Traffic shapingB. Set the max transmit upstream burst to 0C. Traffic policingD. Modulation profilesE. Set the max transmit upstream burst to 255



QUESTION 50What IOS command, entered on cisco cable modem with console access, is most valuable for determining thecause of a modem not being able to come on-line?

A. show controller c 3/0 modem 0B. show interface c 3/0

C. debug ip dhcp detailD. debug cable mac log verboseE. show cable modem



QUESTION 51Incrementing hits with a corresponding excessive number of incrementing misses displayed in a flap list for agiven modem can be an indication of: (multiple answer)

A. Noisy return path performanceB. A modem that has been turned off or disconnected from the systemC. A modem that failed to respond to consecutive "keep alive" pollsD. A modem that has needed to reestablish its link more than once within the configured flap-list insertion-time



QUESTION 52The return path interference designated by the four "diamond shape" markers on the spectrum analyzer displaydepicted in the exhibit is most likely caused by:

A. Return path distributed feedback laser clipping

B. Forward path signals mixing in an undesired "diode like" connection and/or corrosion at some point in thedownstream coaxial network

C. A faulty cable modem transmitter somewhere on the affected return pathD. Downstream laser clipping or laser non-linearitiesE. None of the above



QUESTION 53What ISDN timer is started after Q.931 SETUP msg is sent?

A. T301B. T303C. T302D. T310E. T305



QUESTION 54What Q.931 message cannot be received in response to sending a Q.931 SETUP message?

A. AlertingB. Call ProceedingC. ConnectD. USER InformationE. Progress



QUESTION 55In Frame Relay, the BECN bit is set by:

A. The Frame Relay network, to inform the DTE receiving the frame that congestion was experienced in thepath from source to destination

B. The Frame Relay network, in frames traveling in the opposite direction from those frames that encounteredcongestion

C. The receiving DTE, to inform the Frame Relay network that it is overloaded and that the switch shouldthrottle back

D. The sending DTE, to inform the Frame Relay network that it is overloaded and that the switch should throttle

backE. Any device that uses an extended DLCI address



QUESTION 56What is true about the DLCI field in the Frame Relay header?

A. It consists of two portions, source and destination, which map data to a logical channel.B. It generally has significance only between the local switch and the DTE device.C. It is an optional field in the ITU-T specification.D. It is present only in data frames sent through the network.



QUESTION 57What Delimits the beginning and the end of the Frame Relay frame?

A. AddressB. FCSC. DataD. FlagsE. Packets



QUESTION 58In Frame Relay, the FECN bit is set by:




D. The sending DTE, to inform the Frame Relay network that it is overloaded and that the switch should throttleback

E. Any device that uses an extended DLCI address

Correct Answer: A

Section: (none)Explanation


QUESTION 59What statement is correct?

A. An IP header is always smaller than 20 bytes.B. An IP header is always 20 bytes.C. An IP header is never bigger than 20 bytes.D. An IP header is 20 bytes long, or larger if options are used.E. None of the above



QUESTION 60The diagram shows a collapsed L3 switched building backbone consisting of two L3 switches: W and U. EachL3 switch has a routed interface on every subnet (VLAN) in the building. There are no VLAN trunks in thenetwork. In other words the L3 switches are acting as nativerouters. There are exactly 4 client-side VLANs (subnets): a, b, c, d. There are exactly 2 server-side VLANs(subnets): x and y. There is one routed link (Subnet e) connecting the L3 switches in the core. How manyequal-cost paths to Subnet d does L3 Switch W keep in its routing table?

A. 1B. 2C. 3D. 4E. 5



QUESTION 61An incoming frame is received by a transparent bridge. If the destination address of the frame is not present inthe database, the bridge will:

A. Discard the frameB. Send out the frame on all interfaces, except on the interface where the frame originateC. Put the destination MAC address in the tableD. Broadcast the frame on all interfacesE. None of the above



QUESTION 62A Fast Ethernet connection supporting multiple VLANs is referred to as:

A. A circuit groupB. An emulated LAN (LANE)C. A trunkD. All of the above



QUESTION 63Host D sends a frame to Host B at the same time that Host B sends a frame to Host D. Bridging is enabled onRouter 1, and the two frames collide into each other. Select the best explanation of why Host B will or will notreceive the original frame from Host D:

A. Host B will receive the frame, since Hosts B & D are in the same VLAN.B. Host B will receive the frame, since Hosts B and D are in the same routing domain.C. Host B will not receive the frame, since Hosts B and D are in the same collision domain.D. Host B will not receive the frame, since Hosts B and D are in different broadcast domains.E. Host B will receive the frame, since Hosts B and D are in the same bridging domain.



QUESTION 64Which of the following CGMP (Cisco Group Management Protocol) statements is correct? (multiple answer)

A. CGMP manages multicast traffic in Catalyst 5000 series switches by allowing directed switching of IPmulticast traffic.

B. CGMP will switch IP multicast packets to all ports in one specific VLAN.C. CGMP filtering requires a network connection from the Catalyst 5000 series switch to a router running

CGMP.D. CGMP handles ARP, SAP, UDP, SSAP and DSAP.



QUESTION 65With CGMP enabled, which are unique about the following MAC address range: 01-00-5E-00-00-00 to 01-00-5E-00-00-FF? (multiple answer)

A. CGMP does not prune those MAC addresses.B. They contain the CGMP Multicast addresses for the IGMP Leaves and IGMP Queries.C. CGMP filters those MAC addresses when they arrive at the processorD. They are the reserved IP addresses of 224.0.0.0 to 224.0.0.255 for forwarding local IP multicast traffic in a

single Layer 3 hop.



QUESTION 66According to the MGCP call flow shown, from what line can it be deduced that Call agent requested thegateway to play dial tone.

A. NB. XC. RD. SE. RQNT


Explanation


QUESTION 67Shown is a an output display of "show cable modem" which shows SID 7 in a state indicating that the:

A. DHCP request was sent and acknowledgedB. Client has received an ip addressC. Cable modem has completed the DHCP processD. PCs cannot surf the InternetE. Cable modems cannot ping the gateway



QUESTION 68According to the MGCP call flow shown, from what line can it be deduced that call agent is requesting that thisresidential gateway collect digits?




QUESTION 69What would be the proper recommendation to an MSO's marketing department for offering data services?

A. Data service at 1mb rates for $59.95 per monthB. Data service at 2mb rates for $79.95 per monthC. Tiered data rates with symmetrical speedsD. Tiered data rates with asymmetrical speedsE. Flat rate pricing for maximum speed



QUESTION 70According to the MGCP call flow shown, from what line can it be deduced that Call agent requests notificationabout an on hook condition?




QUESTION 71When configuring the smart-relay feature on the CMTS, what command allows you to populate the GIADDRwith multiple secondary addresses?

A. ip dhcp relay information optionB. cable dhcp-giaddr policyC. cable relay-information-optionD. cable relay-agent-optionE. ip dhcp relay information policy



QUESTION 72When allocating address space within Cisco Network Registrar which statement is most correct?

A. The scope for modems should be legal routable ip addresses.B. The scope for CPEs are usually legal routable ip addresses.C. Scopes should be set up to accurately reflect the subnets defined on the CMTS.D. Client class provisioning should be utilized to handle multiple CMTS requests.E. One large scope for all modem/CPE requests is best.



QUESTION 73The main purpose of tags within cisco network registrar is to:

A. Require modems to be provisioned from client-class-processingB. Allow DHCP requests to be processed to the correct MAC addressC. Associate clients, client classes, and scopes.D. Act as an index point for provisioning from the system-default-policyE. Allow the relay agent to modify option 82 requests



QUESTION 74The correct search order for policies in Cisco Network Registrar is:

A. client named policyclient class named policyclient class embedded policyB. client embedded policyclient class named policyscope embedded policyC. client class named policyclient embedded policyscope embedded policyD. client class named policyclient class embedded policyscope embedded policy



QUESTION 75You have been assigned to disable modem to modem communications to stop gaming on the recently builtplant. What command would you implement?

A. no cable arpB. no cable proxy arpC. no cable relay-agent optionD. arp timeout 0E. cable upstream 0 admission-control



QUESTION 76Below are four 'out' access-lists, configured on an interface. What list will block an IP packet with sourceaddress 144.23.67.94, destination address 197.55.34.254, destination TCP port 23 from leaving the router?

A. access-list 100 deny ip tcp 144.23.67.0 0.0.0.7 eq telnet 197.55.34.240 0.0.0.15 eq telnetaccess-list 100permit ip any any

B. access-list 100 deny tcp 144.23.67.94 0.0.0.7 any eq telnetaccess-list 100 permit ip any anyC. access-list 100 deny tcp 144.23.67.86 0.0.0.7 eq telnet 197.55.34.240 0.0.0.15access-list 100 permit ip any

anyD. access-list 100 deny ip 144.23.67.94 0.0.0.7 host 144.23.67.94access-list 100 permit ip any any



QUESTION 77MPLS traffic engineering routing information is carried by:

A. BGP MEDsB. MP-BGPC. OSPF Opaque LSAs or IS-IS TLVsD. RTP or RTCP packets



QUESTION 78The two label distribution protocols that provide support for MPLS traffic engineering are:

A. RSVP and OSPFB. CR-LDP and IBGPC. RSVP and CR-LDPD. LPS and LDS

Correct Answer: C



QUESTION 79MPLS traffic engineering data is carried by:

A. Opaque LSAs or IS-IS TLVsB. BGP MEDsC. RTP or RTCP packets

nswer: A



QUESTION 80MPLS does not support:

A. MulticastB. OSPFC. BGPD. Multicast and OSPF



QUESTION 81When designing a 2-way data system, the most common bandwidth constraint that must be overcome is:

A. Internet link(s) for the MSOB. Hub-to-Hub backbone speedC. Downstream 64 or 256 QAM between CMTS and CMD. Upstream between the CMTS and CME. Satellite QAM downlink for HITS feed



QUESTION 82What is the expected RF signal level range for an upstream DOCSIS 16-QAM digitally modulated carrier whenmeasured at Point K in the figure?

A. -15 to +15 dBmVB. 0 to +10 dBmVC. +8 to +55 dBmVD. +8 to +58 dBmVE. +50 to +61 dBmV



QUESTION 83What is the expected RF signal level range for a downstream DOCSIS digitally modulated carrier whenmeasured at Point K in the figure?




QUESTION 84What is the recommended minimum carrier-to-noise ratio for downstream DOCSIS 64- and 256-QAM digitallymodulated carriers?

A. 22 dBB. 25 dBC. 35 dBD. 43 dBE. 50 dB



QUESTION 85At what level relative to adjacent channel analog visual carrier levels should a DOCSIS 64- or 256-QAM digitallymodulated carrier be operated?

A. 6 dB to 10 dB higherB. The same levelC. 6 dB to 10 dB lowerD. 10 dB to 17 dB lowerE. 15 dB to 20dB lower



QUESTION 86What is the expected RF signal level range for a downstream DOCSIS digitally modulated carrier whenmeasured at Point C in the figure?




QUESTION 87What is the upper boundary for the Euro-DOCSIS upstream frequency range?

A. 65 MhzB. 62 MHzC. 45 MHzD. 42 MHz



QUESTION 88What is the recommended minimum carrier-to-noise ratio for upstream DOCSIS QPSK and 16-QAM digitallymodulated carriers?

A. 22 dBB. 25 dBC. 35 dBD. 43 dB

E. 50 dB



QUESTION 89What is the correct DOCSIS initialization sequence for cable modems to come online?

A. init(r1), init(d), init(i) init(t), init(o), onlineB. init(r1), init(i), init(d) init(o), init(t), onlineC. init(r1), init(d), init(t) init(i), init(o), onlineD. init(r1), init(i), init(o) init(t), init(d), onlineE. init(r1), init(d), init(i) init(o), init(t), online



QUESTION 90Running BPI, the "cable privacy mandatory" command:

A. Requires TEK & KEK establishment to online modemsB. Means that cable modems must support BPIC. Is one of the minimum requirements for BPI configurationD. Ensures authentication of encryption keysE. Ensures the encryption of RF traffic



QUESTION 91The "Rec Power" field in the report produced by the "show cable modem" command includes an asterisk (*)with the power level for a particular cable modem. This is an indication of:

A. The power level received from the CMTS by the cable modem and an indication that the level has changed.B. The RF power level received at the CMTS line card upstream port and an indication that the cable modem

has reached its maximum transmit power level.C. The RF power level received at the CMTS line card upstream port is an indication of power adjustment

fluctuations.D. The power level received from the CMTS by the cable modem and an indication that the cable modem has

reached its maximum transmit power level.

Correct Answer: CSection: (none)

Explanation


QUESTION 92In order to enable baseline privacy, which are the minimum items required? (multiple answer)

A. Crypto images on the CMs and CMTSsB. Class-of-Service Privacy Enable (0/1): 1C. Have P images on the CMs and CMTSsD. CMTS Authentication (0/1): 1E. cable shared-secret [0 | 7] authentication-key



QUESTION 93Entering the command "cable downstream if-output prbs" from the interface configuration prompt of the CLIwill: (multiple answer)

A. Activate an unmodulated downstream test signal which comprises a continuous wave carrier at thedownstream RF frequency

B. Activate a downstream test signal which comprises a random data pattern modulated to look like a real datastream

C. Activate a downstream test used to ping modems without disruption of normal operationsD. Activate a pseudo random bit stream to be used for downstream spectrum analyzer test measurements



QUESTION 94The "Rec Power" field in the report produced by the "show cable modem" command includes an exclamationpoint (!) with the power level for a particular cable modem. This is an indication of:

A. The power level received from the CMTS by the cable modem and an indication that the level has changedB. The RF power level received at the CMTS line card upstream port and an indication that the cable modem

has reached its maximum transmit power levelC. The RF power level received at the CMTS line card upstream port and an indication that a power

adjustment has been madeD. The power level received from the CMTS by the cable modem and an indication that the cable modem has

reached its maximum transmit power level



QUESTION 95During the modem boot process, how is the modem's power level set to communicate reliably with the headend?

A. The modem scans the downstream QAM signal and sets a value specified by the upstream channeldescriptor.

B. The modem is commanded by the CMTS to set power levels until the ranging is complete.C. The modem tuner sets a level as defined by the DOCSIS specification.D. The modem uses the default value in the broadcom chipset.



QUESTION 96Entering the command "clear cable modem <ip-addr> reset" from the interface configuration prompt of the CLIwill:

A. Add the specified cable modem from the station maintenance list and force it to begin a reset sequenceB. Reset to the default value the number of hosts that can be attached to the specified cable modemC. Clear the specified modem from the flap-list and the flap-list historyD. Do nothing; "clear cable modem <ip-address> reset" is not a valid interface command



QUESTION 97The Hold-Down Timer used in Distance Vector protocols:

A. Sets the time limit of how long a router may keep a packet in its buffer, if the routing protocol is in theprocess of converging

B. Determines the number of seconds a router will wait before sending another update to neighbor routersC. Sets a specific period for routers to neither accept or advertise a route from a destination where an original

route was recently lostD. Sets a duration where routes are not accepted from the neighbor router that caused a routing loop



QUESTION 98The purpose of Administrative Distance, as used by Cisco routers, is:

A. To choose between routes from different routing protocols when receiving updates for the same network

B. To identify which routing protocol forwarded the updateC. To define the distance to the destination used in deciding the best pathD. To be used only for administrative purposes



QUESTION 99In a Distance Vector protocol, "counting to infinity":

A. Calculates the time taken for a protocol to convergeB. Checks to make sure the number of route entries do not exceed a set upper limitC. Counts the packets dropped during a routing loopD. Sets an upper limit for hop count, so that routing loops can be broken if this limit is reachedE. Causes the router to enter an infinite loop and requires the router to be restarted



QUESTION 100For the spanning tree algorithm, a bridge builds part of its forwarding table based on:

A. Destination MAC addressesB. 802.2 headersC. Source MAC addressesD. The Ethernet type fieldE. The SNAP field



QUESTION 101If a host sends a TCP segment with the RST flag set, it means:

A. The receiver should send all data in the reassembly buffer to the application receiving it immediately.B. The receiver should reset the session.C. Any routers between the source and destination hosts should reset the state of the connection in their

buffers.D. The receiver should make certain its send buffer is pushed onto the wire.








A. Host B will receive the frame, since Hosts B & D are in the same VLAN.B. Host B will receive the frame, since Hosts B and D are in the same routing domain.C. Host B will not receive the frame, since Hosts B and D are in the same collision domain.D. Host B will not receive the frame, since Hosts B and D are in different broadcast domains.E. Host B will receive the frame, since Hosts B and D are in the same bridging domain.



QUESTION 104The diagram shows a collapsed L3 switched building backbone consisting of two L3 switches: W and U. EachL3 switch has a routed interface on every subnet (VLAN) in the building. There are no VLAN trunks in thenetwork. In other words the L3 switches are acting as native routers. There are exactly 4 client-side VLANs(subnets): a, b, c, d. There are exactly 2 server-side VLANs (subnets): x and y. There is one routed link (Subnete) connecting the L3 switches in the core. How many equal-cost paths to Subnet d does L3 Switch W keep inits routing table?

A. 1B. 2C. 3D. 4E. 5



QUESTION 105What mechanism enables cut-through switches to process a frame with reduced latency?

A. The destination address is at or near the beginning of the frame.B. The CRC is at the end of the frame.

C. The CRC is at or near the beginning of the frame.D. The source address is at or near the beginning of the frame.E. The data is compressed in the middle of the frame.



QUESTION 106In the MPLS network shown, how many routing tables are on Router PE1?

A. 1B. 2C. 3D. 4E. 5



QUESTION 107What signaling protocol does Cisco use to provide support for MPLS traffic engineering?

A. RSVPB. LDPC. SS7D. TDP



QUESTION 108In the MPLS network shown, how many routing tables are on Router A?

A. 1B. 2C. 3D. 4E. 5



QUESTION 109The two label distribution protocols that provide support for MPLS traffic engineering are:

A. RSVP and OSPFB. CR-LDP and IBGPC. RSVP and CR-LDPD. LPS and LDS



QUESTION 110As shown in the diagram, a building in your campus network has two layer 3 switches in the distribution layerand four layer 2 switches in the wiring closets. The layer 3 switches are labeled R1 and R2. The layer 2switches are labeled A1, A2, A3, and A4. Access switch A1 is configured as the root switch of VLAN 1. Eachaccess switch has a single subnet and the uplinks are configured as access ports, not VLAN trunks. If theuplink labeled X is cut, how long does spanning tree protocol interrupt connectivity before it converges?

A. About 2 to 3 seconds if UplinkFast is enabledB. About 15 secondsC. About 30 secondsD. About 50 secondsE. There should be no loss in connectivity.







QUESTION 112Routers running OSPF and sharing a common segment become neighbors on that segment. What statementregarding OSPF neighbors is FALSE?

A. The Primary and Secondary addresses on an interface allow the router to belong to different areas at thesame time.

B. All routers must agree on the stub area flag in the OSPF Hello Packets.C. Neighbors will fail to form an adjacency if their Hello and Dead intervals differ.D. Two routers will not become neighbors if the Area-ID and Authentication password do not match.



QUESTION 113Within OSPF, what functionality best defines the use of a 'stub' area?


A. It appears only on remote areas to provide connectivity to the OSPF backbone.B. It is used to inject the default route for OSPF.C. It uses the no-summary keyword to explicitly block external routes, defines the non-transit area, and uses

the default route to reach external networks.

D. It is a non-transit area that does not allow flooding of external networks and uses the default route to reachexternal networks.



QUESTION 114If a router had the three routes listed, which one of the routes would forward a packet destined for 10.1.1.1?

A. 10.1.0.0/16 through EIGRP, because EIGRP routes are always preferred over OSPF or static routes.B. 10.1.0.0/16 static, because static routes are always preferred over OSPF or EIGRP routes.C. 10.1.1.0/24 through OSPF because the route with the longest prefix is always chosen.D. Whichever route appears in the routing table first.E. The router will load share between the 10.1.0.0/16 route through EIGRP and the 10.1.0.0/16 static route.








A. RG 58B. RG 59C. RG 59/UD. RG 6E. RG 7













attenuator and equalizer at the output stage in each of the return amplifiers in the network

C. Unity gain with a fixed output level and varying input levels adjusted by the selection of a fixed valueattenuator and equalizer at the input stage of each of the return amplifiers in the network

D. Cable modems the ability to power range comfortably within their output power dynamic rangeE. It is not necessary to align the return path amplifiers since the CMTS will automatically adjust the cable









reference carriers







QUESTION 122A DOCSIS 2-way data system is being designedto limit upstream traffic.Unknown modems should be kept from using precious Upstream bandwidth. Given these requirements, itshould beensured that the DOCSIS configuration file has what set?

A. Vendor-specific information fieldB. Max-cpe should be set to 1

C. CMTS authentication field should be setD. Network Access should be set to 0E. Downstream frequency should be set above 450 MHz












A. show controller c 3/0 modem 0B. show interface c 3/0C. debug ip dhcp detailD. debug cable mac log verboseE. show cable modem







QUESTION 127Customers on a particular node of a CMTS which is operating in sparse mode are experiencing slowperformance. You suspect noise on the return path. Of the choices given what command is the most effectiveto gather the information needed to confirm your suspicion?

A. debug cable mac logB. debug ip packetC. show controllers cable 3/0 upstream 0D. show int cable 3/0 downstreamE. debug cable noise




A. Return path distributed feedback laser clippingB. Forward path signals mixing in an undesired "diode like" connection and/or corrosion at some point in the

downstream coaxial networkC. A faulty cable modem transmitter somewhere on the affected return pathD. Downstream laser clipping or laser non-linearitiesE. None of the above



QUESTION 129Given the above output from exhibit, the entry for 0010.7b6b.7185 might indicate what type of problem?

A. Ingress noise on the upstream is disrupting the service.B. This indicates the customer is repeatedly turning off the cable modem.C. The modem is having a registration problem.D. The fiber-node is clipping the upstream laser.E. The downstream carrier to noise ratio is not high enough.







QUESTION 131When doing a show cable modem it is observed that a few modems are displaying the online(d) state. Usersare complaining that they cannot surf the internet. One possible cause is that:

A. The policy has a misconfigured default gateway.B. The modem sends a DHCP discover but never receives the DHCP offer unicast back from the server.C. The modem has network access disabled in the config file.D. The policy for the CPE pool points to an invalid DNS server.

E. Routing between the provisioning server and the CMTS is broken.



QUESTION 132In the exhibit, the cable modem 00e0.6f01.e7d2 is "flapping," and it is likely due to:

A. Excessive "Hits" caused by return path performance problemsB. Excessive number of RF power adjustmentsC. Low Hit to Miss ratioD. High Hit to Miss ratio







QUESTION 134Numerous cable modems on a common physical upstream port with similarflap list statistics is an indication of:

A. A provisioning server problem or failureB. A cable system return plant problemC. Excessive monitoring of the flap-listD. Flap-list aging parameter that is improperly configured









QUESTION 136With CGMP enabled, which are unique about the following MAC address range: 01-00-5E-00-00-00 to 01-00-5E-00-00-FF? (multiple answer)

A. CGMP does not prune those MAC addresses.B. They contain the CGMP Multicast addresses for the IGMP Leaves and IGMP Queries.C. CGMP filters those MAC addresses when they arrive at the processorD. They are the reserved IP addresses of 224.0.0.0 to 224.0.0.255 for forwarding local IP multicast traffic in a

single Layer 3 hop.



QUESTION 137In this network, Host A is trying to reach Host D. There is no routing protocol running, but Router B and C havethe following static routes configured:

Router B: ip route 10.1.3.0 255.255.255.0 ethernet 1Router C: ip route 10.1.1.0 255.255.255.0 ethernet 1

A. This will not work because Router B has no idea of how to forward traffic to the 10.1.3.0/24 network.B. This will work because Router B will recognize that Router C is on the 10.1.2.0/24 network through a router

discovery protocol and will forward traffic for 10.1.3.0/24 to Router C.C. This will not work because a broadcast interface in a static route command cannot be specified.D. This will work because Router B will ARP for Host D's IP address on the 10.1.2.0/24 network and Router C

will answer.



QUESTION 138Given the four networks listed, what valid summary address (below) contains the longest prefix?

A. 10.1.0.0/20B. 10.1.0.0/16C. 10.1.1.0/23D. 10.1.16.0/19E. These networks cannot be summarized.











QUESTION 141An operator is experiencing excessive customer service calls from a serving area supported by a specific uBR-MC16C module. The CMTS is configured for 64 QAM downstream and 16 QAM with a 3.2 MHz upstreamchannel bandwidth. Having identified the cause of the problem, which three measures could be taken totemporarily resolve it and to ensure acceptable service quality until a permanent problem resolution can beimplemented by the MSO? (multiple answer)

A. Configure the upstream for reduced channel bandwidth.B. Replace the CMTS moduleC. Configure the upstream for QPSK modulationD. Increase the RF output of the upconverterE. Configure the affected CMTS receive port for +3dBmV.

Correct Answer: ACESection: (none)Explanation


QUESTION 142A new Cisco router has no configuration defined. Which methods can be used to configure the router for thefirst time? (multiple answer)

A. Using SNMP via a network management stationB. Connecting a terminal to the console port and running the Setup dialogueC. Connecting a terminal to the console port and directly typing in configuration commandsD. Using BOOTP/SLARP/RARP to download a configuration file that has been created ahead of time

E. Connecting a terminal to the console port, defining a minimal configuration, connecting the router to thenetwork, and using TFTP to download a configuration file that has been created ahead of time

Correct Answer: BCDESection: (none)Explanation


QUESTION 143Debug is enabled on Router B, but no debug messages appear on the terminal. Other commands (showcommands, etc.) seem to be working. What are the probable causes for this? (multiple answer)

A. Router B is not turned on.B. Debug information is being sent to A.C. The "terminal monitor" command needs to be executed if this is a virtual terminal session.D. Debug information is being sent to the buffer instead of to the console terminal.E. Debug information is configured at low priority, and will be displayed at a time when the router is less

congested.























A. Activate an unmodulated downstream test signal which comprises a continuous wave carrier at the

downstream RF frequencyB. Activate a downstream test signal which comprises a random data pattern modulated to look like a real data

streamC. Activate a downstream test used to ping modems without disruption of normal operationsD. Activate a pseudo random bit stream to be used for downstream spectrum analyzer test measurements











QUESTION 150The optimal power level input for the upstream port on the CMTS is:

A. 0dbmvB. -5dbmvC. 5dbmvD. 10dbmvE. It's not important since the sawtooth filter on the upstream port sets the appropriate level.



QUESTION 151Customers green and blue must communicate with each other. Which condition is required?

A. Customer Blue and Customer Green must use BGP for routing to the Internet.B. Customer Blue and Customer Green must use unique addresses in their corporate networks.C.D. The Service Provider must provide BGP Peering to another Service Provider.











QUESTION 154Which are the correct ways to release IBGP from the condition that all IBGP neighbors need to be fullymeshed? (multiple answer)

A. Configure local preferenceB. Configure route reflectorsC. Configure IBGP neighbors several hops awayD. Configure confederations



QUESTION 155Using the shown debugging excerpt, what option best describes the problem?

A. An ISDN router has a misconfigured username password pair.B. An ISDN router is missing the stack password.C. The offload server does not offload calls from ISDN routers not using PPP Multilink.D. The offload server has a bad password.








A. To choose between routes from different routing protocols when receiving updates for the same networkB. To identify which routing protocol forwarded the updateC. To define the distance to the destination used in deciding the best path

D. To be used only for administrative purposes







QUESTION 159In order to avoid loops when sending routing updates, what is the correct technique to prevent a network frombeing forwarded on the same interface it is learned?

A. Poison ReverseB. The use of access-lists used with distribute-listC. Split HorizonD. This is not a problem, since this cannot happen.



QUESTION 160What mechanism should be employed to limit the "transmit rate" from Router A to Router C?

A. Committed Access RateB. Traffic ShapingC. Weighted Fair QueuingD. Packet Classifcation w/ Weighted Fair QueuingE. None of the Above



QUESTION 161Router A has a 512K-access port into the frame relay cloud. Router B has 128K-access port into the framerelay cloud. The two routers are connected with symmetrical PVCs that are configured for 64K committedinformation rate (CIR). What Frame Relay Traffic Shaping map-class sub-command should be entered onRouter A to prevent workstation A from overrunning the access port on Router B?

A. frame-relay traffic-rate 128000 512000B. frame-relay traffic-rate 64000 512000C. frame-relay traffic-rate 512000 64000D. frame-relay traffic-rate 128000 64000E. frame-relay traffic-rate 64000 128000







QUESTION 163What describes a technique, used to encapsulate voice (NOT data) over ATM?

A. RFC 1483B. LANEC. AAL-1D. RFC 1577







QUESTION 165The ATM reference model is composed of which ATM layers? (multiple answer)

A. ATM layerB. Physical layerC. Modular layer

D. ATM adaptation layer



QUESTION 166The address field contains: (multiple answer)

A. The DLCI ValueB. The Extended Address (EA)C. Congestion ControlD. FCS

Correct Answer: ABCSection: (none)Explanation










QUESTION 168What is true about the DLCI field in the Frame Relay header?

A. It consists of two portions, source and destination, which map data to a logical channel.

B. It generally has significance only between the local switch and the DTE device.C. It is an optional field in the ITU-T specification.D. It is present only in data frames sent through the network.



QUESTION 169In Frame Relay, what devices resend packets that do not transmit correctly?

A. Digital transmission media cabled to monitor ports, as opposed to straight DCE signalingB. Network end stationsC. Network switches running SNMP management softwareD. Special bridging devices within the backbone cloud



QUESTION 170Program PID=0 is always:

A. PATB. PMTC. CATD. NITE. EMM



QUESTION 171ITU-R System B Teletext is conveyed in which of the following data forms in a DVB compliant MPEG transportstream?

A. As synchronized transcoded data within the Vertical Blanking Interval (VBI) of the recipient channel.B. As synchronized data within PES packets as part of it's own elementary stream.C. It is encoded as part of the MPEG picture at a uniform bitrate.D. It is encoded as part of the MPEG picture as a reduced bitrate determined by the actual Teletext data

available.E. None of the above.

Correct Answer: BSection: (none)

Explanation


QUESTION 172What is recommended for connecting the uBR7200 series cable modem line card(s) to the HFC network?

A. Headend-grade coaxial cable or quad-shield coaxial cableB. Bonded foil, 60% braid 6-series (RG-6) coaxial cableC. Category 5 (standard) cableD. Category 5e (enhanced) cableE. Multi-mode or single-mode optical fiber



QUESTION 173Routers E and F are configured for HSRP (Hot Standby Routing Protocol). E has a priority of 100, while F has apriority of 50. At one point, when E is the active router, it fails, and F takes over as the active router. A fewminutes later, E returns to service. What happens?

A. F will remain the active router; there is no way for E to become the active router again unless F fails.B. E and F will negotiate which router should be active based on their IP addresses.C. E will always take over the active role; there is no way for F to remain active once another router with a

higher priority is on the network.D. E will become the active router, if it is configured to preempt.E. F will remain the active router because having a lower priority is better.



QUESTION 174If two routers connected to the same Ethernet are configured to run HSRP (Hot Standby Router Protocol) in thesame group number, which router's MAC address will be associated with the virtual IP address?

A. It depends on which router is active.B. Neither - a virtual MAC address will be assigned based on the group number, unless the routers are

configured to use their burned in addresses (BIA).C. The routers will negotiate and decide automatically which MAC address to use based on the routers' IDs.D. Both routers' MAC addresses will be associated with the virtual IP address.E. Neither - the hosts will broadcast all traffic which needs to travel off-segment.



QUESTION 175What is the recommended downstream frequency range for DOCSIS digitally modulated carriers?

A. 5-30 MHzB. 5-42 MHzC. 5-65 MHzD. 50-860 MHzE. 88-860 MHz



QUESTION 176Preliminary troubleshooting measurements have identified degraded bit error rate performance in thedownstream digitally modulated carrier. The bit error rate problem has been measured with a digital modulationanalyzer at Point D in the figure, but there are no measurable bit errors at Point A. What is the most likelyproblem?

A. The cable modem termination system has an intermittent connection at its line card downstream port.

B. The upconverter input is being overdriven.C. Clipping is occurring in the downstream laser transmitter.D. The optical node in the HFC network is incorrectly adjusted.E. Interference from the main headend feed is occurring.



QUESTION 177What is the most effective way to overcome the DOCSIS pps limitation caused by one request outstanding forevery MAC frame on a SID?

A. Rate limitingB. Dynamic map advanceC. Traffic shapingD. ConcatenationE. 3.2 Mhz channel width & QAM modulation



QUESTION 178When setting up a policy in CNR, what would be the correct time offset if you were in a geographical area thatwas -5 hours from GMT?

A. -28800B. -18000C. -21600D. -12500E. -25200




A. 6 dB to 10 dB higherB. The same levelC. 6 dB to 10 dB lowerD. 10 dB to 17 dB lower

E. 15 dB to 20dB lower







QUESTION 181The CLI command "show cable flap-list":

A. Indicates corrected and uncorrected errors in the upstreamB. Indicates power level and upstream SNRC. Identifies the upstream receiver port that is supporting the modems causing customer service calls.D. Indicates that cable modem is at maximum power level.E. Identifies manufacturer of the cable modem, and associated MAC address.



QUESTION 182An old head-end hub site is inherited that services 30,000 HHP and the DOCSIS cable modem services mustbe made operational. There are 15 fiber nodes serving the area combined 4:1. The HFC is a 2-way 550 MHzsystem but is old and leakage has been found measuring 150 uV/m in multiple locations. Extensive ingress hasalso been found in the return path on the analyzer on each return leg. Given the above conditions it would bebest to design the network to use:

A. A mixed modulation profile that utilizes QPSK for station, initial, and request MAC messages while using 16-QAM for short and long MAC messages

B. A mini-slot size for each upstream to ensure all bursts are 32 symbols or lessC. Combine all upstream ports together and then split them back out to upstream ports so that modems on any

one leg can be sent a UCC to change to a cleaner upstream portD. A modulation profile that utilizes all QPSK MAC messages for maximum noise immunityE. Leakage tagging on pilot tones which ensures DOCSIS modems avoid upstream ingress frequencies



QUESTION 183Below are four 'out' access-lists, configured on an interface. What list will block an IP packet with sourceaddress 144.23.67.94, destination address 197.55.34.254, destination TCP port 23 from leaving the router?

A. access-list 100 deny ip tcp 144.23.67.0 0.0.0.7 eq telnet 197.55.34.240 0.0.0.15 eq telnetaccess-list 100permit ip any any

B. access-list 100 deny tcp 144.23.67.94 0.0.0.7 any eq telnetaccess-list 100 permit ip any anyC. access-list 100 deny tcp 144.23.67.86 0.0.0.7 eq telnet 197.55.34.240 0.0.0.15access-list 100 permit ip any

anyD. access-list 100 deny ip 144.23.67.94 0.0.0.7 host 144.23.67.94access-list 100 permit ip any any







QUESTION 185The network administrator has forgotten the enable password of the router. Luckily, no one is currently loggedinto the router, but all passwords on the router are encrypted. What should the administrator do to recover theenable password?

A. Call the Cisco Technical Assistance Center (TAC) for a special code that will erase the existing password.B. Reboot the router, press the break key during bootup, boot the router into ROM monitor mode, and modify

the configuration register so that the current configuration is ignored during normal bootupC. Reboot the router, press the BREAK key during bootup, and boot the router into ROM Monitor mode to

erase the configuration, and re-install the entire configuration as it was saved on a TFTP server.D. Erase the configuration, boot the router into ROM Monitor mode, press the BREAK key, and overwrite the

previous enable password with a new one.







QUESTION 187Host 1 and Host 2 are on Ethernet LANs in different buildings. A serial line is installed between two Ciscorouters using Cisco HDLC serial line encapsulation. Routers A and B are configured to route IP traffic. Host 1sends a packet to Host 2. What is the destination MAC address of the packet on Host's 1 Ethernet?

A. Host 1B. Host 2C. Router AD. Router BE. The broadcast address



QUESTION 188A network engineer is troubleshooting a connectivity problem between Hosts A and B. The following conditionsexist:- Host A can ping the firewall, but cannot ping Host B.- Host B can ping both the firewall andwww.cisco.com.- The firewall can ping www.cisco.com.- Host C can ping the firewall and www.cisco.com.- HostA and Host C have the same permissions on the firewallWhat is the most likely problem?

A. Routing protocols in the network are not set up properly, and not propagating across the firewall.B. Host A has an incorrect default gateway configured.C. Host B has an incorrect default gateway configured.D. Host C has an incorrect default gateway configured.E. The firewall has an incorrect default gateway configured.



QUESTION 189According to the MGCP call flow shown, from what line can it be deduced that call agent is requesting that this

residential gateway collect digits?




QUESTION 190Given the upstream ports above are combined 2:1, which combinations of ports will work in a live network?(multiple answer)

A. U0 & U2, U1 & U5, U3 & U4B. U0 & U1, U2 & U3, U4 & U5C. U0 & U5, U1 & U2, U3 & U4D. U0 & U4, U1 & U3, U1 & U5E. U0 & U5, U1 & U3, U2 & U4

Correct Answer: BESection: (none)Explanation















A. NB. XC. R

D. SE. RQNT







QUESTION 199What is the primary benefit of the "time-to-live" field in the IP header?

A. To improve buffer utilizationB. To reduce the impact of routing loopsC. To allow calculation of round-trip delaysD. To remind us that all earthly joys are fleetingE. To avoid delivery of packets that are no longer useful



QUESTION 200Using the above diagram, which are valid BGP AS_Path Attributes received at Net1 for a route originating fromAS65100? (multiple answer)

A. 200 57000 100 65100B. 200 57000 100 100C. 100 57000 200D. 200 57000 100E. 65100 100 57000 200







QUESTION 202Which are the correct ways to release IBGP from the condition that all IBGP neighbors need to be fullymeshed? (multiple answer)

A. Configure local preferenceB. Configure route reflectorsC. Configure IBGP neighbors several hops awayD. Configure confederations



QUESTION 203Customers green and blue must communicate with each other. Whichcondition is required?

A. Customer Blue and Customer Green must use BGP for routing to the Internet.B. Customer Blue and Customer Green must use unique addresses in their corporate networks.C. All Service Provider routers must use BGP.D. The Service Provider must provide BGP Peering to another Service Provider.

















Correct Answer: C











QUESTION 210Given the upstream ports above are combined 2:1, which combinations of ports will work in a live network?(multiple answer)

A. U0 & U2, U1 & U5, U3 & U4B. U0 & U1, U2 & U3, U4 & U5C. U0 & U5, U1 & U2, U3 & U4D. U0 & U4, U1 & U3, U1 & U5E. U0 & U5, U1 & U3, U2 & U4









Correct Answer: C







QUESTION 214Which are recommended for connecting the uBR7200 series cable modem line card(s) to the HFC network?(multiple answer)

A. RG-6B. RG-7C. RG-11D. RG-59











QUESTION 216In Frame Relay, the FECN bit is set by:
















QUESTION 219Which addresses below would be valid IP addresses of hosts on the Internet? (multiple answer)

A. 235.1.1.1B. 223.20.1.1C. 10.100.1.1D. 127.0.0.1E. 24.15.1.1



QUESTION 220What network is a supernet?

A. 134.176.64.0 255.255.192.0B. 16.0.1.0 255.255.255.0C. 134.176.0.16 255.255.255.240D. 195.97.16.0 255.255.254.0







QUESTION 222What type of signaling is most relevant to ATM networks supports SVCs?

A. H.323B. Q.2931C. ETSI.761D. G.723

Correct Answer: B



QUESTION 223What does NOT contribute to lowered throughput in practical IP over ATM networks?

A. ILMI overheadB. SAR delayC. Cell taxD. Cell padding







QUESTION 225What type of fiber-optic system is used to distribute cable television signals?

A. Point to multipointB. Local Area networkC. SwitchedD. Point to point



QUESTION 226A network engineer is troubleshooting a connectivity problem between Hosts A and B. The following conditionsexist:- Host A can ping the firewall, but cannot ping Host B.- Host B can ping both the firewall andwww.cisco.com.- The firewall can ping www.cisco.com.- Host C can ping the firewall and www.cisco.com.- Host

A and Host C have the same permissions on the firewallWhat is the most likely problem?




QUESTION 227In the MPLS network shown, how many routing tables are on Router A?

A. 1B. 2

C. 3D. 4E. 5




A. 1B. 2C. 3D. 4E. 5



QUESTION 229What signaling protocol does Cisco use to provide support for MPLS traffic engineering?

A. RSVPB. LDPC. SS7D. TDP



QUESTION 230MPLS traffic engineering routing information is carried by:

A. BGP MEDsB. MP-BGPC. OSPF Opaque LSAs or IS-IS TLVsD. RTP or RTCP packets















QUESTION 233What is the best IOS command for determining the channel bandwidth on an upstream port for slot 3?

A. show interface c 3/0 upstreamB. show interface c 3/0 upstream modem 0C. show controller c 3/0 upstreamD. show cable hopE. show cable all







QUESTION 235The optimal power level input for the upstream port on the CMTS is:

A. 0dbmvB. -5dbmvC. 5dbmvD. 10dbmvE. It's not important since the sawtooth filter on the upstream port sets the appropriate level.




A. Activate an unmodulated downstream test signal which comprises a continuous wave carrier at the

downstream RF frequencyB. Activate a downstream test signal which comprises a random data pattern modulated to look like a real data

streamC. Activate a downstream test used to ping modems without disruption of normal operationsD. Activate a pseudo random bit stream to be used for downstream spectrum analyzer test measurements







QUESTION 238If a Dialer Profile exists in the local configuration of a router, what is true?

A. A virtual-access password is configured automatically.B. A virtual-access interface will inherit all configurations from the dialer profile.C. AAA parameters cannot be applied to an interface.D. None of the above





Correct Answer: D



QUESTION 240The diagram shows a collapsed L3 switched building backbone consisting of two L3 switches: W and U. EachL3 switch has a routed interface on every subnet (VLAN) in the building. There are no VLAN trunks in thenetwork. In other words the L3 switches are acting as nativerouters. There are exactly 4 client-side VLANs (subnets): a, b, c, d. There are exactly 2 server-side VLANs(subnets): x and y. There is one routed link (Subnet e) connecting the L3 switches in the core. How manyequal-cost paths to Subnet d does L3 Switch W keep in its routing table?

A. 1B. 2C. 3D. 4E. 5



QUESTION 241What statement is correct regarding Virtual LANs (VLANs)?

A. It is permissible to bridge inside a VLAN, but not to route between VLANs.B. It is not permissible to bridge inside a VLAN, but it is valid to route between VLANs.C. It is permissible to bridge inside a VLAN and to route between VLANs.D. It is not permissible to bridge inside or route between VLANs.



QUESTION 242What is an Inter Switch Link (ISL)?

A. A protocol to interconnect switches across ATM onlyB. A protocol to interconnect switches across FDDI onlyC. An IEEE protocol to interconnect multiple switchesD. A Cisco proprietary protocol for interconnecting multiple switchesE. An IEEE protocol to interconnect multiple switches across Fast Ethernet




A. Host B will receive the frame, since Hosts B & D are in the same VLAN.B. Host B will receive the frame, since Hosts B and D are in the same routing domain.C. Host B will not receive the frame, since Hosts B and D are in the same collision domain.

D. Host B will not receive the frame, since Hosts B and D are in different broadcast domains.E. Host B will receive the frame, since Hosts B and D are in the same bridging domain.







QUESTION 245If a router had the three routes listed, which one of the routes would forward a packet destined for 10.1.1.1?

A. 10.1.0.0/16 through EIGRP, because EIGRP routes are always preferred over OSPF or static routes.B. 10.1.0.0/16 static, because static routes are always preferred over OSPF or EIGRP routes.C. 10.1.1.0/24 through OSPF because the route with the longest prefix is always chosen.D. Whichever route appears in the routing table first.E. The router will load share between the 10.1.0.0/16 route through EIGRP and the 10.1.0.0/16 static route.





0.0.0.255 area 6



QUESTION 247Within OSPF, what functionality best defines the use of a 'stub' area?

A. It appears only on remote areas to provide connectivity to the OSPF backbone.B. It is used to inject the default route for OSPF.C. It uses the no-summary keyword to explicitly block external routes, defines the non-transit area, and uses

the default route to reach external networks.D. It is a non-transit area that does not allow flooding of external networks and uses the default route to reach

external networks.


Explanation


QUESTION 248An inverse ARP is sent:

A. To map a hostname to an IP addressB. To map an IP address to a hostnameC. To map an MAC address to an IP addressD. To map a MAC address to a hostnameE. To map an IP address to a MAC address




A. Vendor-specific information fieldB. Max-cpe should be set to 1C. CMTS authentication field should be setD. Network Access should be set to 0E. Downstream frequency should be set above 450 MHz







QUESTION 257Which are HFC cable television forward path networks aligned to provide?(multiple answer)





reference carriers













QUESTION 260What is RPF?

A. Reverse Path ForwardingB. Reverse Path FloodingC. Router Protocol FilterD. Routing Protocol FileE. None of the above



QUESTION 261Assume IP Videoconference station A places a 384Kb call to IP Videoconference station B and theWorkstations are transferring files back and forth between themselves during the same time period. WhatCisco feature should be used on both routers to avoid unwanted jitter and guarantee the videoconference willget enough bandwidth for the duration of the call?

A. Frame Relay Traffic Shaping (FRTS) with FRF.12 packet fragmentationB. Generic Traffic Shaping (GTS) with FECN Rate Adaptation activatedC. Bandwidth Guarantee for Videoconferencing (BGV)D. Resource Reservation Protocol (RSVP)E. Weighted Fair Queuing (WFQ) with IP Precedence



QUESTION 262In the diagram shown, what mechanism needs to be employed on the remote site routers to aid congestionavoidance in the core, based on traffic priorities?

A. IP Precedence TaggingB. Weighted Random Early DetectionC. Random Early DetectionD. Class Based Weighted Fair Queuing



QUESTION 263When a TCP segment is lost, the TCP sender reacts by: (multiple answer)

A. Resending the segmentB. Increasing the window sizeC. Resetting the sessionD. Increasing the amount of time it will wait when timing out the next segment that is sent



QUESTION 264For the spanning tree algorithm, a bridge builds part of its forwarding table based on:

A. Destination MAC addressesB. 802.2 headersC. Source MAC addressesD. The Ethernet type fieldE. The SNAP field



QUESTION 265In this diagram, Host G is attempting to send a packet to Host A through Router E. All routers are runningEIGRP, and Router E has installed the following route in its routing table:1.1.0/24 via router FWhat will occur when Router E receives packets from Host G that are destined for Host A?

A. E cannot have a route to 10.1.1.0/24 through F; so it will always choose the path through C.B. This is a routing loop; E will forward the traffic to F, and F will send the traffic back to E.C. Router E will forward the traffic to Router F.D. Router E will forward the traffic to Router F and send a 'host not reachable this direction' ICMP packet to

Host G.E. Router E will forward the traffic to Router F and send an ICMP redirect to Host G.



QUESTION 266With RIP running, what command would be used to set the default route on Router 2 to 171.68.64.6 (Router3)?

A. ip default-network 171.68.64.6B. ip route 0.0.0.0 255.255.255.255 171.68.64.6C. ip route 0.0.0.0 0.0.0.0 171.68.64.6D. None of the above



QUESTION 267Determine the minimum upstream RF bandwidth and modulation capable of supporting concurrent systemtraffic resulting from 100 G711 telephone circuits with 0.137 erlangs, and 30 simultaneous data users with anaverage Best Effort rate of 24 Kbs. Assume G711 requires 110 Kbs per voice circuit. (Multiple answer)

A. 1.6 MHz Bandwidth with QPSKB. 3.2 MHz Bandwidth with QPSKC. 0.8 MHz Bandwidth with 16 QAMD. 1.6 MHz Bandwidth with 16 QAM



QUESTION 268What is the nominal bandwidth of a DOCSIS 2.3 Mbps QPSK or 4.5 Mbps 16-QAM digitally modulated carrier?

A. 800 kHzB. 1.6 MHzC. 3.2 MHzD. 6 MHz

E. 8 MHz



QUESTION 269What is the expected RF signal level range for an upstream DOCSIS 16-QAM digitally modulated carrier whenmeasured at Point K in the figure?






Correct Answer: ASection: (none)

Explanation



A. 6 dB to 10 dB higherB. The same levelC. 6 dB to 10 dB lowerD. 10 dB to 17 dB lowerE. 15 dB to 20dB lower







QUESTION 273What is the recommended minimum carrier-to-noise ratio for upstream DOCSIS QPSK and 16-QAM digitallymodulated carriers?

A. 22 dBB. 25 dBC. 35 dBD. 43 dBE. 50 dB



QUESTION 274An old head-end hub site is inherited that services 30,000 HHP and the DOCSIS cable modem services mustbe made operational. There are 15 fiber nodes serving the area combined 4:1. The HFC is a 2-way 550 MHzsystem but is old and leakage has been found measuring 150 uV/m in multiple locations. Extensive ingress hasalso been found in the return path on the analyzer on each return leg. Given the above conditions it would bebest to design the network to use:

A. A mixed modulation profile that utilizes QPSK for station, initial, and request MAC messages while using 16-QAM for short and long MAC messages

B. A mini-slot size for each upstream to ensure all bursts are 32 symbols or lessC. Combine all upstream ports together and then split them back out to upstream ports so that modems on any

one leg can be sent a UCC to change to a cleaner upstream portD. A modulation profile that utilizes all QPSK MAC messages for maximum noise immunityE. Leakage tagging on pilot tones which ensures DOCSIS modems avoid upstream ingress frequencies



QUESTION 275What is the expected RF signal level range for a downstream DOCSIS digitally modulated carrier whenmeasured at Point K in the figure?




QUESTION 276While entering commands on a console, the break key is pressed accidentally and the router reboots. Whataction could disable this problem?

A. In configuration mode, enter disable break.B. In configuration mode, enter no service break.C. Change the configuration register.D. Replace the router - this is an invalid response to pressing the break key when past 60 seconds after boot.







QUESTION 278Upon deleting an IOS image file from flash, an execution of show flash shows the file still in flash, with a 'D'preceding it (as shown in the exhibit). What step must be taken in order to remove the file completely?

A. Erase the file from flashB. Format the flash deviceC. Replace the flash card - it is defectiveD. Execute a squeeze command on the flash device



QUESTION 279Look at the router configuration above. If this router has a configuration-register setting of 0x102, select theproper boot sequence:

A. The router will try to use the image "rsp-isv-mz.112-8.P" on slot 0, then attempt to boot from a networkserver, and finally boot from ROM.

B. The router will try use the image "rsp-isv-mz.112-8.P" on slot 0, then attempt to boot from any other validimage in flash, and finally boot from ROM.

C. The router will try to use the image "rsp-isv-mz.112-8.P" on slot 0, and then it will boot from ROM.D. The router will try to use the image "rsp-isv-mz.112-8.P" on slot 0, and then attempt to boot from a network

server.



QUESTION 280The configuration register does NOT retain settings for:

A. An enabled 'Break' keyB. The console baud rate

C. The boot methodD. An enabled AUX port









Correct Answer: A



QUESTION 283A large number displayed in the Ins column in a flap list for a given modem is not an indication of:

A. A modem that has needed to reestablish its link too frequently within the configured flap-list insertion-timeB. A modem that has been turned off or disconnected from the systemC. Cable modem that is having a registration problemD. A modem that failed to respond to consecutive "keep alive" polls



QUESTION 284In the "show cable flap-list" what issues can causes a flap to be incremented? (multiple answer)

A. "hit" followed by a "miss"B. Modem keeps trying to quickly reregisterC. Cable modem goes offlineD. After six consecutive missesE. "miss" followed by a "hit"

Correct Answer: BDESection: (none)Explanation



A. The policy has a misconfigured default gateway.B. The modem sends a DHCP discover but never receives the DHCP offer unicast back from the server.C. The modem has network access disabled in the config file.D. The policy for the CPE pool points to an invalid DNS server.E. Routing between the provisioning server and the CMTS is broken.



QUESTION 286

How can decreasing the interleave-depth value effect performance?

A. It increase the time to transmit a packet.B. It decreases the upstream transmission rate.C. It reduces the time needed to transmit a packet.D. It increases the downstream transmission rate.E. It increases the time between transmission of a MAP packet




A. Return path distributed feedback laser clippingB. Forward path signals mixing in an undesired "diode like" connection and/or corrosion at some point in the

downstream coaxial networkC. A faulty cable modem transmitter somewhere on the affected return pathD. Downstream laser clipping or laser non-linearitiesE. None of the above



QUESTION 288An ISP complains that users are changing their QOS profiles to faster rates than they are paying for. Whatcommand would provide the most effective solution?

A. cable source verifyB. shared secretC. no cable qos permission modemD. no cable qos profile createE. no cable qos profile update







QUESTION 290What command on the Ubr7246 can help find the possibility of a problem with ingress noise on cable x/yupstream? (multiple answer)

A. Show controller cable x/y upstream zB. Debug cable mac log verboseC. Debug cable modulationD. Show cable hopE. Show int cable x/y upstream z



QUESTION 291What would be the best method for determining the cause of CPEs notgetting provisioned an address?




QUESTION 292PCRs are located where in an MPEG packet?

A. Transport Packet HeaderB. Adaptation FieldC. Sync byteD. PayloadE. Transport Private data



QUESTION 293Interlaced fields are separated by:

A. 1/60 secB. 1/30 secC. 1/25 secD. 1/15 sec



QUESTION 294The CLI command "show cable hop":(multiple answer)

A. Indicates corrected and uncorrected errors in the upstream.B. Indicates power level and upstream SNR.C. Identifies the upstream receiver port that is supporting the modems causing customer service calls.D. Indicates that cable modem is at maximum power level.E. Identifies manufacturer of the cable modem, and associated MAC address.

Correct Answer: AC



QUESTION 295In order to avoid loops when sending routing updates, what is the correct technique to prevent a network frombeing forwarded on the same interface it is learned?




QUESTION 296What establishes routing table precedence in a routing table?

A. Default metricsB. Routing priorityC. Type of serviceD. Iambic pentameterE. Administrative distance







QUESTION 298

When using IS-IS for IP routing, Dual IS-IS defined by RFC 1195, what istrue? (multiple answer)








QUESTION 300Routers E and F are configured for HSRP (Hot Standby Routing Protocol). E has a priority of 100, while F has apriority of 50. At one point, when E is the active router, it fails, and F takes over as the active router. A fewminutes later, E returns to service. What happens?

A. F will remain the active router; there is no way for E to become the active router again unless F fails.B. E and F will negotiate which router should be active based on their IP addresses.C. E will always take over the active role; there is no way for F to remain active once another router with a

higher priority is on the network.D. E will become the active router, if it is configured to preempt.E. F will remain the active router because having a lower priority is better.



QUESTION 301If two routers connected to the same Ethernet are configured to run HSRP (Hot Standby Router Protocol) in thesame group number, which router's MAC address will be associated with the virtual IP address?

A. It depends on which router is active.B. Neither - a virtual MAC address will be assigned based on the group number, unless the routers are

configured to use their burned in addresses (BIA).C. The routers will negotiate and decide automatically which MAC address to use based on the routers' IDs.D. Both routers' MAC addresses will be associated with the virtual IP address.E. Neither - the hosts will broadcast all traffic which needs to travel off-segment.



















QUESTION 306Given a PAL HFC and 8 MHz channel lineup in the downstream, is itpossible to utilize 6 MHz DOCSIS cable modems and signals on the network?
















reference carriers







QUESTION 310Unity gain is being used for alignment. The first amplifier from the node has 25 dB of gain and is 2000 feet

away with cable loss of 1 dB per 100 feet. The node has an output of 35 dBmV at 55.25 MHz. What is the inputat the amplifier?













A. Vendor-specific information field

B. Max-cpe should be set to 1C. CMTS authentication field should be setD. Network Access should be set to 0E. Downstream frequency should be set above 450 MHz



QUESTION 314A network engineer is troubleshooting a connectivity problem between Hosts A and B. The following conditionsexist:- Host A can ping the firewall, but cannot ping Host B.- Host B can ping both the firewall andwww.cisco.com.- The firewall can ping www.cisco.com.- Host C can ping the firewall and www.cisco.com.- HostA and Host C have the same permissions on the firewallWhat is the most likely problem?




QUESTION 315Host 1 and Host 2 are on Ethernet LANs in different buildings. A serial line is installed between two Ciscorouters using Cisco HDLC serial line encapsulation. Routers A and B are configured to route IP traffic. Host 1sends a packet to Host 2. What is the destination MAC address of the packet on Host's 1 Ethernet?

A. Host 1B. Host 2C. Router AD. Router BE. The broadcast address



QUESTION 316While entering commands on a console, the break key is pressed accidentally and the router reboots. Whataction could disable this problem?

A. In configuration mode, enter disable break.B. In configuration mode, enter no service break.C. Change the configuration register.D. Replace the router - this is an invalid response to pressing the break key when past 60 seconds after boot.







QUESTION 318To restrict SNMP access to a router, what configuration command could be used?

A. snmp-server communityB. snmp-server enableC. snmp-server logD. snmp-server host




A. 1B. 2C. 3D. 4E. 5



QUESTION 320In MPLS what is an LSP?

A. Label Selection PairB. Label Switched PathC. Lightweight Signaling Protocol

D. Large Sampling Path



QUESTION 321MPLS does not support:

A. MulticastB. OSPFC. BGPD. Multicast and OSPF



QUESTION 322A European cable operator intends to deploy a uBR7223 equipped with an uBR-MC16E card to serviceeighteen nodes each having approximately 750 house holds passed. Each upstream is expected to serve 60G711 A law voice circuits with a traffic load of 0.137 erlangs, and simultaneously support 30 data circuits withan average data throughput of 24 Kbs. The average downstream data rate is expected to be 150 Kbs persubscriber. The upstream bandwidth is limited to 1.6 MHz.

A. 64 QAM Downstream, 16 QAM UpstreamB. 256 QAM Downstream, 16 QAM UpstreamC. 256 QAM Downstream, QPSK UpstreamD. 256 QAM Downstream, 16 QAM UpstreamE. 64 QAM Downstream, QPSK Upstream



QUESTION 323What is the nominal bandwidth of a DOCSIS 2.3 Mbps QPSK or 4.5 Mbps 16-QAM digitally modulated carrier?

A. 800 kHzB. 1.6 MHzC. 3.2 MHzD. 6 MHzE. 8 MHz


Explanation


QUESTION 324When setting up a policy in CNR, what would be the correct time offset if you were in a geographical area thatwas -5 hours from GMT?

A. -28800B. -18000C. -21600D. -12500E. -25200



QUESTION 325Operating a EuroDOCSIS system, the upconverter is set for an output level of 108.75 dBuV, the downstreampower in dBmV is:

A. 60 dBmVB. 48.75 dBmVC. 168.75 dBmVD. 8.75 dBmVE. 40 dBmV







QUESTION 327What is the expected RF signal level range for an upstream DOCSIS QPSK digitally modulated carrier whenmeasured at Point K in the figure?




QUESTION 328Given: Two-way splitter insertion loss is 4 dB, diplex filter insertion loss is 1 dB, and interconnecting cable lossis 1 dB.Assuming a nominal signal level of 0 dBmV at Point J in the figure, what is the expected upstreamsignal level at Point K in the figure?

A. 0 dBmVB. +46 dBmVC. +55 dBmVD. +58 dBmVE. +61 dBmV







QUESTION 330What is the recommended minimum carrier-to-noise ratio for downstream DOCSIS 64- and 256-QAM digitallymodulated carriers?

A. 22 dBB. 25 dBC. 35 dBD. 43 dB

E. 50 dB


















Explanation


QUESTION 334The address field contains: (multiple answer)

A. The DLCI ValueB. The Extended Address (EA)C. Congestion ControlD. FCS

Correct Answer: ABCSection: (none)Explanation


QUESTION 335What is RPF?

A. Reverse Path ForwardingB. Reverse Path FloodingC. Router Protocol FilterD. Routing Protocol FileE. None of the above







Correct Answer: AC











QUESTION 339Entering the command "clear cable modem <ip-addr> reset" from the interface configuration prompt of the CLIwill:

A. Add the specified cable modem from the station maintenance list and force it to begin a reset sequenceB. Reset to the default value the number of hosts that can be attached to the specified cable modemC. Clear the specified modem from the flap-list and the flap-list historyD. Do nothing; "clear cable modem <ip-address> reset" is not a valid interface command



QUESTION 340

What is the best IOS command for determining the channel bandwidth on an upstream port for slot 3?

A. show interface c 3/0 upstreamB. show interface c 3/0 upstream modem 0C. show controller c 3/0 upstreamD. show cable hopE. show cable all






















QUESTION 344Which can occur if cables other than those recommended for connecting the uBR7200 series cable modemline card(s) to the HFC network are used? (multiple answer)

A. The modulation error ratio (MER) will increase.B. The carrier-to-noise ratio (CNR) will increase.C. The line card F connectors may be damaged.D. Co-channel interference may occur in long, parallel cable runs.E. Common mode currents will occur on the outer surface of the cable shield.







QUESTION 346In the Internet core, routers communicating over ATM typically use:

A. SVCsB. HFCsC. PVCsD. SUVs

E. None of the above







QUESTION 348How long is an ATM cell header?

A. 5 octets (bytes)B. 3 octets (bytes)C. 8 octets (bytes)D. The size varies by AAL type used



QUESTION 349ATM switches use the VPI/VCI fields of the cell header:

A. To identify the QOS parameters specified in the traffic contract between the ATM end station and thenetwork

B. To determine if the cell should be discarded in preference to others that have not exceeded their trafficenvelope

C. To identify the next intermediate destination to which the cell should be passedD. To determine if the header contains a checksum error and should be discardedE. To determine if the cell contains user data or control data



QUESTION 350A router has the above routes listed in its routing table and receives a packet destined for 172.16.0.45. Whatwill happen?

A. The router will not forward this packet, since it is destined for the 0 subnet.B. The router will forward the packet through 172.31.116.65, since it has the lowest metric.C. The router will forward the packet through 10.1.1.1.D. The router will forward the packet through 172.31.116.65, since it has the lowest administrative distance.E. The router will forward the packet through 192.168.1.4.



QUESTION 351Given an address of 10.1.1.1 with a subnet mask of 255.255.255.224, how many hosts can be addressed inthis subnet?

A. 16B. 15C. 30D. 31E. 63



QUESTION 352The network associated with Router A's Ethernet 0 port is designed to be publicly accessible. However, RouterB's Token Ring 0 network should be accessible only to hosts from Router A's Ethernet 0 network. What accesslist for Router B would accomplish this?

A. access-list 99 permit 191.8.1.0 0.0.0.255access-list 99 deny 0.0.0.0 255.255.255.255B. access-list 103 permit 191.8.1.0 0.0.0.255access-list 103 deny 0.0.0.0 255.255.255.255C. access-list 88 deny 0.0.0.0 255.255.255.255access-list 88 permit 191.8.1.0 0.0.0.255D. access-list 3 permit 191.8.1.0 255.255.255.0access-list 3 deny 0.0.0.0 0.0.0.0E. access-list 99 permit 191.8.10.0 0.0.0.0access-list 99 deny 0.0.0.0 255.255.255.255







QUESTION 354In order to avoid loops when sending routing updates, what is the correct technique to prevent a network from

being forwarded on the same interface it is learned?





A. To choose between routes from different routing protocols when receiving updates for the same networkB. To identify which routing protocol forwarded the updateC. To define the distance to the destination used in deciding the best pathD. To be used only for administrative purposes



QUESTION 356What statement is correct regarding Virtual LANs (VLANs)?

A. It is permissible to bridge inside a VLAN, but not to route between VLANs.B. It is not permissible to bridge inside a VLAN, but it is valid to route between VLANs.C. It is permissible to bridge inside a VLAN and to route between VLANs.D. It is not permissible to bridge inside or route between VLANs.



QUESTION 357What is Fast EtherChannel?

A. A feature to bundle multiple Ethernet point-to-point links quickly into one logical high speed linkB. A feature to bundle multiple Fast-Ethernet point-to-point links into one logical high speed linkC. Another name for full-duplex Fast EthernetD. Another name for Gigabit EthernetE. None of the above


Explanation


QUESTION 358What is an Inter Switch Link (ISL)?

A. A protocol to interconnect switches across ATM onlyB. A protocol to interconnect switches across FDDI onlyC. An IEEE protocol to interconnect multiple switchesD. A Cisco proprietary protocol for interconnecting multiple switchesE. An IEEE protocol to interconnect multiple switches across Fast Ethernet







QUESTION 360Assume IP Videoconference station A places a 384Kb call to IP Videoconference station B and theWorkstations are transferring files back and forth between themselves during the same time period. WhatCisco feature should be used on both routers to avoid unwanted jitter and guarantee the videoconference willget enough bandwidth for the duration of the call?

A. Frame Relay Traffic Shaping (FRTS) with FRF.12 packet fragmentationB. Generic Traffic Shaping (GTS) with FECN Rate Adaptation activatedC. Bandwidth Guarantee for Videoconferencing (BGV)D. Resource Reservation Protocol (RSVP)E. Weighted Fair Queuing (WFQ) with IP Precedence



QUESTION 361In the diagram shown, what mechanism needs to be employed on the remote site routers to aid congestionavoidance in the core, based on traffic priorities?

A. IP Precedence TaggingB. Weighted Random Early DetectionC. Random Early DetectionD. Class Based Weighted Fair Queuing



QUESTION 362In an MPEG II transport stream, what describes the correct relationship between PSI tables?

A. The PAT contains BAT elements for each program. Within each BAT are pointers to a PMT. The PMTpoints to specific program elements. The NIT always resides on PID 4096 and therefore doesn't require apointer.

B. The PAT contains pointers to BATs. BATs contains descriptors for each program element and a pointer tothe associated NIT.

C. The PAT contains pointers to program elements within each PMT. NIT's are described separately and arenot associated with the PMT.

D. The PAT contains pointers to programs and private tables, such as CAT's and NITs. The PMT containspointers to each program element. The BAT associates program elements within a service.

E. The PAT contains pointers to PMTs for each program, private tables, and other tables such NITs. PMTscontains pointers to each element with a program. BATs are not associated with the PMT.



QUESTION 363What statement describes DVB Data Piping?

A. It supports data broadcast services that require a streaming oriented end to end delivery of data in eitherasynchronous or synchronized formats.

B. It supports data broadcast services that require the transmission of datagrams of communication protocols.C. It supports data broadcast services that require the periodic transmission of data modules.D. It supports data broadcast services that require a simple asynchronous, end-to-end delivery.E. It supports data broadcast services that require high rate, opportunistic transmission of data modules with

low QoS requirements.



QUESTION 364Look at the router configuration above. If this router has a configuration-register setting of 0x102, select theproper boot sequence:

A. The router will try to use the image "rsp-isv-mz.112-8.P" on slot 0, then attempt to boot from a networkserver, and finally boot from ROM.

B. The router will try use the image "rsp-isv-mz.112-8.P" on slot 0, then attempt to boot from any other validimage in flash, and finally boot from ROM.

C. The router will try to use the image "rsp-isv-mz.112-8.P" on slot 0, and then it will boot from ROM.D. The router will try to use the image "rsp-isv-mz.112-8.P" on slot 0, and then attempt to boot from a network

server.



QUESTION 365Debug is enabled on Router B, but no debug messages appear on the terminal. Other commands (showcommands, etc.) seem to be working. What are the probable causes for this? (multiple answer)

A. Router B is not turned on.B. Debug information is being sent to A.C. The "terminal monitor" command needs to be executed if this is a virtual terminal session.D. Debug information is being sent to the buffer instead of to the console terminal.E. Debug information is configured at low priority, and will be displayed at a time when the router is less

congested.









Correct Answer: D



QUESTION 368In BGP, why should a Route Reflector be used?

A. To overcome issues of split-horizon within BGPB. To reduce the number of External BGP peers by allowing updates to reflect without the need to be fully

meshedC. To allow the router to reflect updates from one Internal BGP speaker to another without the need to be fully

meshedD. To divide Autonomous Systems into mini-Autonomous Systems, allowing the reduction in the number of

peersE. None of the above



QUESTION 369Using the above diagram, which are valid BGP AS_Path Attributes received at Net1 for a route originating fromAS65100? (multiple answer)

A. 200 57000 100 65100B. 200 57000 100 100C. 100 57000 200D. 200 57000 100E. 65100 100 57000 200



QUESTION 370When a TCP segment is lost, the TCP sender reacts by: (multiple answer)

A. Resending the segmentB. Increasing the window size

C. Resetting the sessionD. Increasing the amount of time it will wait when timing out the next segment that is sent



QUESTION 371An operator is experiencing excessive customer service calls from a serving area supported by a specific uBR-MC16C module. The CMTS is configured for 64 QAM downstream and 16 QAM with a 3.2 MHz upstreamchannel bandwidth. Identify two appropriate CLI commands which will identify the cause of the problem.(multiple answer)

A. "debug cable remote-query"B. "show controllers cable upstream"C. "show cable flap-list"D. "show cable interface monitor"E. "show cable hop"



QUESTION 372What are the 4 bridge port states in a transparent bridging environment?

A. Spanning, learning, blocking, forwardingB. Connecting, learning, spanning, forwardingC. Listening, learning, blocking, forwardingD. Broadcasting, listening, forwarding, blockingE. Learning, forwarding, connecting, blocking



QUESTION 373Routers running OSPF and sharing a common segment become neighbors on that segment. What statementregarding OSPF neighbors is FALSE?

A. The Primary and Secondary addresses on an interface allow the router to belong to different areas at thesame time.

B. All routers must agree on the stub area flag in the OSPF Hello Packets.C. Neighbors will fail to form an adjacency if their Hello and Dead intervals differ.D. Two routers will not become neighbors if the Area-ID and Authentication password do not match.



QUESTION 374OSPF is defined on a Frame Relay interface providing point-to-multipoint connections. The remote neighborscan reach this central site, but are complaining of routing failures between each of the remote sites. The centralrouter has all the routes for each remote site. Based on this information, what can be diagnosed as the biggestpotential problem?

A. An over-subscribed Frame Relay switch will cause some packet loss.B. There are problems in the use of OSPF Authentication.C. There is an incorrect selection of the Designated Router.D. There is an incorrect DLCI assigned on a point-to-point sub-interface.





0.0.0.255 area 6



QUESTION 376What is the best definition of the use of "Area 0" in OSPF?

A. Area 0 is used for administrative reasons, and is restricted from user definition.B. Area 0 is defined as the backbone, designed to be at the center of all routing updates, and controls the

dissemination of updates between areas.C. Area 0 is used to authenticate messages received from other routers in the same area.D. Area 0 is used for forwarding all routing updates received within the same Autonomous System from directly

connected areas only.E. Area 0 allows for routing updates to be forwarded between different Autonomous Systems.





Correct Answer: A







QUESTION 379In the exhibit, the cable modem 00e0.6f01.e7d2 is "flapping," and it is likelydue to:




QUESTION 380An ISP complains that users are changing their QOS profiles to faster rates than they are paying for. Whatcommand would provide the most effective solution?

A. cable source verifyB. shared secretC. no cable qos permission modemD. no cable qos profile createE. no cable qos profile update




A. The policy has a misconfigured default gateway.B. The modem sends a DHCP discover but never receives the DHCP offer unicast back from the server.C. The modem has network access disabled in the config file.D. The policy for the CPE pool points to an invalid DNS server.E. Routing between the provisioning server and the CMTS is broken.








A. show controller c 3/0 modem 0

B. show interface c 3/0C. debug ip dhcp detailD. debug cable mac log verboseE. show cable modem



QUESTION 384What would be the best method for determining the cause of CPEs not getting provisioned an address?








QUESTION 386In the exhibit shown, what is the problem with sid 73?

A. Registration failed due to corrupted config file.B. Registration failed due to incorrect channel width.C. Registration failed due to incorrect clocking.D. Registration failed due to bad class of service.E. Registration failed due to bad mic.








A. DHCP request was sent and acknowledgedB. Client has received an ip addressC. Cable modem has completed the DHCP process

D. PCs cannot surf the InternetE. Cable modems cannot ping the gateway






















QUESTION 396What are the 4 bridge port states in a transparent bridging environment?

A. Spanning, learning, blocking, forwardingB. Connecting, learning, spanning, forwardingC. Listening, learning, blocking, forwardingD. Broadcasting, listening, forwarding, blockingE. Learning, forwarding, connecting, blocking










QUESTION 401In the exhibit, the cable modem 00e0.6f01.e7d2 is "flapping," and it is likelydue to:








QUESTION 403In the exhibit shown, what is the problem with sid 73?

A. Registration failed due to corrupted config file.B. Registration failed due to incorrect channel width.C. Registration failed due to incorrect clocking.D. Registration failed due to bad class of service.E. Registration failed due to bad mic.








A. ip dhcp relay information option

B. cable dhcp-giaddr policyC. cable relay-information-optionD. cable relay-agent-optionE. ip dhcp relay information policy











QUESTION 408

In the exhibit, the cable modem 00e0.6f00.6ef6 is "flapping" likely due to:








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