Chapter6Exam

Due Mar10at11:59pm Points 25 Questions 25 Available Jan19at12amMar10at11:59pmabout2months TimeLimit 45Minutes

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LATEST Attempt1 15minutes 25outof25

Scoreforthisquiz:25outof25SubmittedJan27at2:33pmThisattempttook15minutes.

1/1ptsQuestion1

WhichstatementcorrectlydescribestheproblemwhenNATandIPsecimplementationcoexistinthenetwork?

NATchangestheencryptionkeysthatareusedbyIPsecduringthekeynegotiationprocesses.

NATchangestheTCPandUDPtransportprotocolsthatareembeddedinthepayloadoftheIPsecpackets.

NATchangesthesourceanddestinationIPaddressesthatareencapsulatedinsidetheIPsecpackets.

NATchangestheIPheaderfields,andthosechangescanconflictwiththeintegrityofIPsecprotocols.Correct!

RefertoChapter6.

1/1ptsQuestion2

Refertotheexhibit.UsersontheLANcomplainedthattheycannotaccesstheInternet.Basedontheprovidedoutput,whatcouldbethepossiblecauseoftheproblem?

ToofewaddressesareassignedtotheNATpool.

TheNATpoolisconfiguredwiththewrongnetmask.

AnincorrectACLisreferencedduringtheNATtranslationprocess.Correct!

Theconfigurationsfortheinsideandoutsideinterfacesarereversed.

RefertoChapter6.

1/1ptsQuestion3

WhataretwothingstobetakenintoconsiderationwhenNATisconfiguredinthenetwork?(Choosetwo.)

thetypeofinterfacethatisconfiguredforNAT

thescopeoftheIPaddressesthatareconfiguredintheNATpool

theprotocolsthatareusedinthenetworkCorrect!

thetypeofACLsthatarefilteringthetrafficfromsourcetodestination

theportnumbersthatareusedbytheapplicationsCorrect!

RefertoChapter6.

1/1ptsQuestion4

Refertotheexhibit.UsersontheLANcomplainedthattheycannotaccesstheresourcesonthenetwork.AnetworkadministratorissuedthedebugipudpcommandonR2toverifytheDHCPserveroperation.Onthebasisoftheprovidedoutput,whatcouldbethepossiblecauseoftheproblem?

ThedomainnamecommandismissingfromtheR3configuration.

TheiphelperaddresscommandismissingfromtheR2configuration.Correct!

TheipdhcppoolcommandismissingfromtheR2configuration.

TheipdhcpexcludedaddressescommandismissingfromtheR2configuration.

RefertoChapter6.

1/1ptsQuestion5

Refertotheexhibit.UsersonLAN_1complainedthattheycannotcommunicatewiththeotherusersonthenetwork.AnetworkadministratorissuedshowipdhcpconflictcommandtoverifytheDHCPserveroperationontherouter.Basedontheprovidedoutputs,whatcouldbedonetoremedytheproblem?

IssuethedhcpservicescommandonrouterR2.

ConfiguretheIPaddressesthatmustbeexcludedfromtheDHCPpool.Correct!

IssuetheiphelperaddresscommandundertheFa0/1interface.

ConfiguretheDHCPpoolforalargerscopeofIPaddresses.

RefertoChapter6.

1/1ptsQuestion6

Refertotheexhibit.RoutersR1andR2cannotgetDHCPaddressesfromrouterR3,whichisconfiguredasaDHCPserver.Afterissuingtheshowipsocketcommandandtroubleshootingtheproblem,anetworkadministratorverifiesthattheR1andR2interfacesareupandoperational.Basedontheprovidedoutput,whatcouldbethepossiblecauseoftheproblem?

TheIPaddressesfromtheDHCPpoolhavebeenexhausted.

IllegaladdresseshavebeenassignedtotheinterfacesofroutersR1andR2.

TheDHCPservicesaredisabledonR3.Correct!

TheIPhelperaddressismissingfromtheR3configuration.

RefertoChapter6.

1/1ptsQuestion7

Refertotheexhibit.HostAisunabletoobtainanIPaddressfromtheDHCPserver.Whichprocedurewouldsolvethisproblem?

ConfigureinterfaceFa0/1ofrouterRTAwiththeiphelperaddress10.1.2.10command.

ConfigureinterfaceFa0/0ofrouterRTAwiththeiphelperaddress10.1.2.1command.

ConfigureinterfaceFa0/0ofrouterRTAwiththeipforwardprotocol67command.

ConfigureinterfaceFa0/0ofrouterRTAwiththeiphelperaddress10.1.2.10command.Correct!

RefertoChapter6.

1/1ptsQuestion8

Refertotheexhibit.HostAisunabletoobtainanIPaddressfromtheDHCPserver.Whichprocedurewouldsolvethisproblem?

ConfigureinterfaceFa0/0ofrouterRTAwiththeiphelperaddress10.1.2.1command.

ConfigureinterfaceFa0/1ofrouterRTAwiththeiphelperaddress10.1.2.10command.

ConfigureinterfaceFa0/0ofrouterRTAwiththeiphelperaddress10.1.2.10command.Correct!

ConfigureinterfaceFa0/0ofrouterRTAwiththeipforwardprotocol67command.

RefertoChapter6.

1/1ptsQuestion9

Refertotheexhibit.WhichstatementaccuratelydescribestheIPv6routingconfiguration?

Thenetwork4001::1/128isunreachable.

Thecommandipv6route5000::/64null0wasenteredontherouter.

Thecommandipv6route5432::/48null0wasenteredontherouter.Correct!

Thenetwork4000::2/128waslearnedviaaroutingprotocol.

RefertoChapter6.

1/1ptsQuestion10

Refertotheexhibit.R2isabranchrouterandaccessesallnonlocalnetworksviaR1.ThenetworkadministratoristroubleshootingwhyrouterR2cannotaccessanyexternalnetworks.Basedontheoutputofthecommands,whatisthelikelyissue?

IPv6unicastroutinghasnotbeenenabledonR1.Correct!

TheIPv6addressconfiguredforR1isinvalid.

ThedefaultrouterforR1isinvalid.

R2hasnotbeenconfiguredforautoconfiguration.

RefertoChapter6.

1/1ptsQuestion11

Refertotheexhibit.AnetworkadministratorhasconfiguredNATonrouterR1.However,R1doesnottranslateaddresseswhenhostsfromthe10.0.0.0/24LANattempttoaccesstheInternet.Whichconfigurationchangewouldcorrectthissituation?

Enterthenoipnatinsidesourcestatic10.0.0.10209.165.200.226command.

MakeinterfaceFa0/0theinsideNATinterfaceandS0/0/0theoutsideNATinterface.Correct!

ChangethenetmaskoftheNATPOOLto255.255.255.224.

ChangetheNATpooltobeinthesamesubnetastheIPaddressofs0/0/0.

Appendtheoverloadkeywordtotheipnatinsidesourcelist1poolNATPOOLcommand.

RefertoChapter6.

1/1ptsQuestion12

WhichtypeofDHCPmessageissentbyaDHCPclienttoaDHCPserver?

DHCPACK

DHCPNACK

DHCPOFFER

DHCPINFORMCorrect!

RefertoChapter6.

1/1ptsQuestion13

WhatarethethreerolesaroutermayassumewithrespecttoDHCP?(Choosethree.)

serverCorrect!

remoteagent

supplicant

relayagentCorrect!

clientCorrect!

forwarder

RefertoChapter6.

1/1ptsQuestion14

WhichthreeUDPportsareassociatedwithmessagesthatareforwardedbydefaultbyaDHCPrelayagent?(Choosethree.)

51

59

53Correct!

80

37Correct!

69Correct!

RefertoChapter6.

1/1ptsQuestion15

Refertotheexhibit.AnetworktechnicianishavingissuessettinguprouterR4inaIPv6network.Whatproblemisindicatedfromtherouteroutput?

TheinterfacealsorequiresanIPv4address.

IPv4routesshouldberedistributedintoIPv6.

IPv6routingneedstobeenabled.Correct!

AroutingprotocolforIPv6mustbeenabled.

RefertoChapter6.

1/1ptsQuestion16

Refertotheexhibit.AnetworktechnicianisattemptingtogettheInternetconnectionoperational.ThetechniciangatherstheinformationfromthedebugcommandontheborderrouterwhileattemptingapingfromComputer1totheISP.AfteraconversationwiththeISP,itisdeterminedthattheISProuterlackstheappropriateroutetothecustomer.WhatrouteshouldbeaddedtotheISProuter?

iproute0.0.0.00.0.0.0Serial0/3/0

iproute72.163.4.160255.255.255.24810.10.10.2Correct!

iproute192.168.254.0255.255.255.010.10.10.2

iproute10.10.10.0255.255.255.252Serial0/3/0

RefertoChapter6.

1/1ptsQuestion17

Refertotheexhibit.AnetworktechnicianisaddingthehostPC5tothelocalLAN.AfterthehostisconnectedtoanoperationalportonSwA2,whichisinthecorrectVLAN,thehostcannotconnecttotheInternet.AllotherhostscanreachtheInternet.Basedontheprovidedoutput,whatistheproblem?

TheDHCPserverserviceisdisabled.

TheaddressesintheDHCPpoolareinthewrongsubnet.

ThereisnodefaultrouterdefinedintheDHCPpool.

TheavailableaddressesintheDHCPpoolareexhausted.Correct!

RefertoChapter6.

1/1ptsQuestion18

Refertotheexhibit.AnetworkadministratorhasimplementedNetworkAddressTranslation(NAT)onrouterR1.However,hostsontheinsideLANcannotconnecttoaddressesoutsideofthecorporatenetwork.Whichoptioncorrectlyidentifiestheproblem?

TheNATPOOLshouldhaveincludedtheS0/0/0interfaceIPaddress.

NATcannotusenamedaccesscontrollists.

TheACLisreferringtothewronginternalnetwork.Correct!

ThestaticNATentryIPaddressisnotincludedintheNATPOOL.

InterfaceFa0/0shouldbeconfiguredastheoutsideNATinterfaceandS0/0/0astheinsideNATinterface.

Theoverloadkeywordhasnotbeenappendedtotheipnatinsidesourcecommand.

RefertoChapter6.

1/1ptsQuestion19

WhichIPaddressshouldanadministratorwhoisconfiguringNATadvertisetotheoutsideworld?

outsidelocal

outsideglobal

insidelocal

insideglobalCorrect!

RefertoChapter6.

1/1ptsQuestion20

ThenetworkadministratorchangedtheDHCPaddresspoolfrom10.10.0.0/16to10.20.0.0/16andisnowreceivingcomplaintsfromusersthattheyareunabletoconnecttotheInternet.Theadministratorissuesthecommandshowipnattranslationsontheborderrouterand

observesthattherearenoactivetranslationspresent.TheadministratorthenverifiesthatconnectivitytotheInternetfromtheborderrouterispresent.Whatshouldtheadministratordonext?

ChangefromdynamictostaticNATforalloutboundconnections.

IncreasethesizeoftheexistingNATpool.

VerifythattheACLisselectingthecorrectaddressesfortranslation.Correct!

CreateanewNATpoolusingthe10.20.0.0/16addressspace.

RefertoChapter6.

1/1ptsQuestion21

Refertotheexhibit.AnetworkadministratorcreatedastaticNATtranslation.ThepurposeofthetranslationistoallowoutsideuserstousetheIPaddress209.165.201.1toconnecttoaserverthatislocatedontheinternalnetworkatIPaddress172.16.6.3.However,usersareunabletoconnecttotheserverbyusingthesuppliedaddress.Whatisthemostprobablecauseoftheproblem?

DynamicNATmustbeusedtoallowanoutsideusertoconnecttotheserver.

Thenetworkadministratorreversedtheaddressesinthemappingcommand.Correct!

The172.16.0.0/16networkhasnotbeenadvertisedtotheoutsideworld.

Thereisnooutsideglobaladdressspecified.

Noaccesslisthasbeenconfiguredtoselectthetrafficthatisallowedtoconnecttotheserver.

RefertoChapter6.

1/1ptsQuestion22

Refertotheexhibit.AnetworkadministratorhasconfiguredastaticNATentryonrouterR1fortheinternalwebserver.However,externalusersstillcannotconnecttothewebserver.Whichprocedurewouldresolvethisproblem?

Forsecurityreasons,anoutsideaddresscannotbemappedtoaninternalprivateaddressandthereforethewebservershouldbeconfiguredwithavalidpublicaddress.

Deletethecurrentstaticentryandissuetheipnatinsidesourcestatic10.1.1.10209.165.200.226command.Correct!

Removetheoverloadkeywordfromtheipnatinsidesourcelistcommand.

Deletethecurrentstaticentryandissuetheipnatoutsidesourcestatic10.0.0.10209.165.200.226command.

RefertoChapter6.

1/1ptsQuestion23

AnetworkadministratoristroubleshootinganEIGRPauthenticationproblem.Thisisanexampleoftroubleshootingwhichfunctionalplane?

RoutingProtocolPlane

DataPlane

ManagementPlane

EIGRPPlane

ControlPlaneCorrect!

RefertoChapter6.

1/1ptsQuestion24

Refertotheexhibit.AuserhasaPCthatconnectstoaVoIPphoneandthephoneconnectstoportFa0/1ontheswitch.Theuseriscomplainingaboutnotbeingabletoaccessthenetwork.Theusercannotaccessanylocalprintserversandcannotpinganyneighboringdevices.TheadministratorattemptstopingthePCoftheuserbutisunsuccessful.Basedontheoutputoftheshowportsecuritycommand,whatcouldbetheissue?

TheswitchportdetectedmorethanoneMACaddress.Correct!

TheswitchportdetectedaMACaddressthatbelongstoadifferentVLAN.

Theswitchportdetectedabridgingloop.

Theswitchporthasnotbeenabletodetectanydevicesconnectedtoit.

RefertoChapter7.

1/1ptsQuestion25

Refertotheexhibit.CompanyAisdeployingIPtelephonyintheiroffices.AnetworktechnicianunplugsthepatchcablethatcurrentlyconnectstothePCfromthewalljackandthenplugsthecableintotheportlabeledas10/100PContheIPphone.ThetechniciannextusesanotherpatchcabletoconnecttheswitchportontheIPphonetothewalljack.Aftercompletingthesechanges,thetechniciannoticesthattheIPphonecannotinitializeandthatthePClosesconnectivity.Thetechnicianthencheckstheconfigurationontheswitch.Accordingtotheoutputoftheshowrunningconfigcommand,whatshouldthetechniciandonextinordertofindthecauseoftheproblem?

SwitchthetwopatchcablesthatconnecttotheIPphone.

MakesurethattheportsforSkinnyandTFTParenotblockedbyACLs.

MakesurethatthevoiceVLAN700isallowedonthetrunkingport.

MakesurethattheportsecuritysettingallowsmorethanoneMACaddress.Correct!

RefertoChapter7.

QuizScore:25outof25