ist236 chapters 01, 02 & 03 test review 1

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Tests & Final Exam › Test 1: Chapters 1, 2, and 3 1. Where can a RFID tag be read? A. only when next to the scanner B. anywhere within the range of a transmitted radio signal 100% Correct. C. only within the line of sight of the scanner D. when physically connected to the scanner 2. ____ give team-based workers the ability to access the network resources that they need while collaborating in a team environment. A. Barcodes B. RFIDs C. Video pills D. WLANs 100% Correct 3. What kind of device is in this picture? A. Free space optics transceiver B. Bluetooth device C. RFID tag 100% D. WAP transceiver 4. What type of device is in this picture?

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Page 1: IST236 Chapters 01, 02 & 03 Test Review 1

Tests & Final Exam › Test 1: Chapters 1, 2, and 3

1. Where can a RFID tag be read?A. only when next to the scanner B. anywhere within the range of a transmitted radio signal 100% Correct. C. only within the line of sight of the scanner D. when physically connected to the scanner

2. ____ give team-based workers the ability to access the network resources that they need while collaborating in a team environment.A. Barcodes B. RFIDs C. Video pills D. WLANs 100% Correct

3. What kind of device is in this picture?

A. Free space optics transceiver B. Bluetooth device C. RFID tag 100% D. WAP transceiver

4. What type of device is in this picture?

A. Global Systems for Mobile Communications B. RFID device C. Free space optics transceiver 100%

Page 2: IST236 Chapters 01, 02 & 03 Test Review 1

D. Bluetooth device

5. In the picture diagram below, what is the name of the device in the middle that translates HTML to WML?

A. WAP gateway 100% B. WAP transceiver C. WAP translator D. WAP converter

6. An employee who purchases an access point and secretly brings it into the office in order to provide personal wireless access has installed what is known as a ____ access point.A. rogue 100% Correct. B. hot C. cold D. war

7. The ____ technology has a transmission distance of up to 10 meters.A. RFID B. Bluetooth 100% Correct. C. WiMax D. GSM

8. Why is a WLAN less expensive for business than a wired LAN?A. equipment is less expensive B. no need to tunnel through walls and ceilings to install cable 100% Correct. C. wireless equipment does not need to be upgraded D. All of the above

9. With _____ broadband, also known as WiMax, the signal is transmitted between the antennas of the buildings at speeds up to 75 Mbps and at distances up to 53 kilometers (35 miles).

1. fixed 100% Contains fixed (100%)

Page 3: IST236 Chapters 01, 02 & 03 Test Review 1

10. In the picture below, we see a _____________________.

A. M2A transconverter B. Bluetooth adapter C. Transciever microchip D. Video pill 100%

11. Which sector of the economy has adopted wireless technology most completely?A. education B. construction C. travel 100% Correct. D. business

12. Where must a WiMax transmitter be located?A. anywhere in a building B. anywhere on upper floors of a building C. by a window in the upper floors of a building D. on the roof of a building 100% Correct.<br/><br/>

13. If an organization’s data processing center becomes inoperable, it can move all data processing operations to a ____, often within an hour.

A. recovery location B. neutral site C. cold site D. hot site 100% Correct.<br/><br/>

14. Fixed broadband wireless uses wireless transmissions for data communications over short distances less than 50 feet. True or False? A. True B. False 100%

15. In order to send and receive e-mail messages on a handheld device, Bluetooth would be the best solution. True or False? A. True B. False 100%

16. A location where wireless data services are available is known as a(n) A. access spot B. Global System Availability Location (GSAL) C. access portal D. hotspot 100%

Page 4: IST236 Chapters 01, 02 & 03 Test Review 1

17. Match each term with the correct statement below. 1. provides a standard way to transmit, format, and display Internet data for devices like cell phones and

handheld devices c. wireless application protocol

2. alternative to high-speed fiber optic transmissions j. free space optics

3. small radio transceivers built onto microprocessor chips f. radio modules

4. unauthorized individuals actively searching for wireless signals to pick up h. war driving

5. wireless transmissions between devices that cannot be mobile b. fixed broadband wireless

6. special software that helps identify other Bluetooth devices d. link manager

7. wireless NIC e. wireless adapter

8. tags used to identify items i. radio frequency identification

9. translates between WML and HTML g. WAP gateway

10. a Bluetooth network a. piconet

18. What type of transmission is shown in the picture below?

A. Diffused transmission 100% B. Refracted transmission C. Directed transmission D. LOS transmission E. Directional transmission

Page 5: IST236 Chapters 01, 02 & 03 Test Review 1

19. Which type of remote wireless bridge connection is used to connect multiple LAN segments together?A. segment-to-segment B. multipoint-to-multipoint C. point-to-point D. point-to-multipoint 100%

20. Which IEEE committee establishes standards for wireless wide area networks?A. 802.3 B. 802.11 C. 802.13 D. 802.16 100% Correct.

21. The radio frequency spectrum is divided into ____ different sections or bands. A. 300

B. 450 100% Correct. C. 900 D. 1200

22. Remote wireless ____________________ are ideal solutions for connecting sites such as satellite offices, remotecampus settings, or temporary office locations when the sites are separated by obstacles such as bodies of water, freeways, or railroads that make using a wired connection impractical or very expensive.1. bridges 100% Contains bridge (100%)

23. Label the correct operating mode for the two remote wireless bridges shown in the diagram below:

1. root 50% Contains root (50%)Contains nonroot (50%)

2. non-root 100% Contains root (50%)Contains non-root (50%)

Page 6: IST236 Chapters 01, 02 & 03 Test Review 1

24. What is the device shown in the picture below?

A. Remote wireless bridge100% B. Remote wireless switch C. Remote wireless hub D. Remote wireless router E. Remote wireless server

25. In the pictures below, what is the name of the device that the PDA is in?

A. tray B. cradle C. dock D. sled 100% E. port replicator

26. What function is performed by a wireless gateway?A. authentication B. encryption C. bandwidth management D. All of the above 100% Correct.<br/><br/>

Page 7: IST236 Chapters 01, 02 & 03 Test Review 1

27. Beginning with Windows ____, all Microsoft desktop operating systems recognize a wireless NIC without the need for any external software drivers.A. NT B. ME C. 2000 D. XP 100% Correct.<br/><br/>

28. The IEEE 802.11 standard outlines the use of ____ transmissions for WLANs.A. diffused infrared 100% Correct. B. directed infrared C. radio wave D. gallium arsenide

29. Ultimately, who regulates standards that are developed by consortia?A. a regulatory body B. the marketplace 100% Correct. C. the government D. the manufacturers

30. A(n) ____ card improves input/output speed over a PC Card by increasing the bus width to 32 bits yet still supports lower-voltage PC Cards.A. mini PCI B. CardBus 100% Correct. C. built-in D. access point

31. When a business is registered as a ____ they are qualified be placed in an online database of wireless hotspot locations.A. Wi-Fi Alliance member B. Wi-Fi Zone 100% Correct. C. SOHO D. WECA

32. The type of wireless network interface card that would not be found in a laptop computer is a(n) A. Mini PCI card B. PCI card 100% C. CardBus D. PC Card Type II

33. Although the transmission range of an access point can vary, the number of wireless clients that it can support does not vary. True or False? A. True B. False 100%

34. One of the functions of an access point is to serve as a base station for the wireless network. True or False? A. True 100% B. False

Page 8: IST236 Chapters 01, 02 & 03 Test Review 1

35. A SIDO card would be used in which type of device? A. Laptop computer B. Desktop computer C. Personal digital assistant (PDA) 100% D. Access point

36. A remote wireless bridge can only connect wireless networks together. True or False? A. True B. False 100%

37. Match each term with the correct statement below.

1. serves as the primary regulatory agency for wireless communications in the United States and its territorial possessions

j. FCC 2. device that connects the computer to the network so that it can send and receive data

g. NIC 3. device that combines wireless management and security in a single appliance

d. wireless gateway 4. type of solid-state (microchip) storage technology in which there are no moving parts

a. flash memory 5. common practices that the industry follows for various reasons, ranging from ease of use to tradition to what

the majority of the users do e. de facto standard

6. small card that is functionally equivalent to a standard PCI expansion card c. mini PCI

7. standards that are controlled by an organization or body that has been entrusted with that task i. de jure standards

8. device that is used to connect two network segments together h. bridge

9. world’s largest technical professional society with members around the globe b. IEEE

10. a technology that sends an electrical current through unused wires of an Ethernet cale f. PoE

38. The length of an antenna should be about ____ the wavelength.A. 1/10 of B. 1/4 of 100% Correct. C. 1/2 of D. equal to

39. ____ antennas are used for long distance, point-to-point wireless links, such as connecting buildings that are up to 42 kilometers (25 miles) apart.A. Fresnel B. Omni-directional C. Semi-directional D. Highly-directional 100% Correct

Page 9: IST236 Chapters 01, 02 & 03 Test Review 1

Score: 2/2 40. RF power gain and loss on a relative scale are measured in ____________________ instead of mW.

1. dB 100% Equals decibels (100%) Equals dB (100%)

41. What type of modulation is shown in the waveform below?

A. Phase modulation (PM) 100% B. Amplitude modulation (AM) C. Quadrature modulation (QM) D. Frequency modulation (FM)

42. ____ can occur intentionally from an external power source that amplifies the signal, or unintentionally when an RF signal bounces off an object and combines with the original signal to amplify it.A. Phase shift B. Modulation C. Loss D. Gain 100% Correct.<br/><br/>

43. Loss of signal (attenuation) can be caused by many factors. Which one of these factors is shown in this drawing?

A. Reflection B. Absorption C. Scattering D. Diffraction E. Refraction F. VSWR 100%

Page 10: IST236 Chapters 01, 02 & 03 Test Review 1

44. The drawing below is an example of ______________ propagation.

1. LOS 100% Contains LOS (100%) Contains line of sight (100%)

45. A basic rule of thumb in dealing with RF power gain and loss is know as the 10's and 3's Rules of RF Math. Referring to the table below, match up the percentage of power lost or gained in the table:

Box A 50% Lost 25.0% 50% LostBox B 100% Gained 25.0% 100% GainedBox C 90% Lost 25.0% 90% LostBox D 1,000% Gained 25.0% 1,000% Gained

46. What is a problem with measuring RF loss using a linear scale?A. it does not reveal what the loss is in relation to the whole 100% Correct. B. it is inaccurate C. it is difficult to calculate D. it requires complex measurements

Page 11: IST236 Chapters 01, 02 & 03 Test Review 1

47. What kind of antenna is shown is this drawing?

A. Semi-directional antenna 100% B. Omni-directional antenna C. Highly-directional antenna D. Dipole antenna

48. Electromagnetic waves travel freely through space in all directions at the speed of light, or approximately ____ per second.A. 1 kilometer B. 100 kilometers C. 186,000 miles 100% D. 93,000,000 miles

49. What is the free space loss (in dB) for IEEE 802.11b and 802.11g WLANs when the distance in meters is 100?A. 80 100% B. 88 C. 92 D. 97

50. Which type of RF loss is caused by the equipment transmitting the signal?A. Scattering B. Voltage Standing Wave Ratio 100% C. Diffraction D. Absorption

51. ____ modulation changes the number of waves representing one cycle.A. Amplitude B. Phase shift C. Frequency 100% D. Phase

52. Which of the following is an electromagnetic wave?A. light B. heat C. radio D. All of the above 100%

53. Resistance is measured in watts. True or False? A. True B. False 100%

Page 12: IST236 Chapters 01, 02 & 03 Test Review 1

54. Modulation cannot be performed on analog transmissions. True or False? A. True B. False 100%

55. Waves that are continuous with no breaks represent a(n) _____ signal. A. digital B. analog 100% C. modulated D. transfer

56. Wireless LAN transmissions are analog and not digital. True or False? A. True B. False 100%

57. How often an event occurs can create different A. modulations B. frequencies 100% C. cycles D. gigapops (GPS)

58. Match each term with the correct statement below. 1. voltage multiplied by the current

h. electrical power

2. up-and-down wave j. oscillating signal

3. orientation of the radio waves as they leave the antenna c. polarization

4. rate at which an event occurs g. frequency

5. bending caused by an object in the path of the transmission i. diffraction

6. changes to a signal that can be made to enable it to carry information d. modulation

7. equal to current times resistance e. voltage

8. negative difference in amplitude between signals f. loss

9. occurs when the RF signal comes in contact with elements in the air, such as rain or heavy dust particles a. scattering

10. measure of the flow of electrical current b. amps

Page 13: IST236 Chapters 01, 02 & 03 Test Review 1

Test 1: Chapters 1, 2, and 3

Page 14: IST236 Chapters 01, 02 & 03 Test Review 1

1. Why is a WLAN less expensive for business than a wired LAN?

 

A. equipment is less expensive    

 B. no need to tunnel through walls and ceilings to install cable 100%    Correct. 

C. wireless equipment does not need to be upgraded    

D. All of the above    

2.With ____________________ broadband, also known as WiMax, the signal is transmitted between the antennas of the buildings at speeds up to 75 Mbps and at distances up to 53 kilometers (35 miles).

  1.  fixed  100% Contains fixed (100%)

3. What type of device is used in the medical field to diagnose digestive problems without surgery?

 

 A. video pill 100%    Correct. 

B. RFID    

C. wireless LAN    

D. barcoded medications    

4.An employee who purchases an access point and secretly brings it into the office in order to provide personal wireless access has installed what is known as a ____ access point.

 

 A. rogue 100%    Correct. 

B. hot    

C. cold    

D. war    

5. What kind of device is in this picture?

 

A. WAP transceiver    

 B. RFID tag 100%     

C. Free space optics transceiver    

D. Bluetooth device    

6. A Bluetooth network that contains one master and at least one slave device forms a ____.

 

  Student Response Value Correct Answer Feedback

A. winet    

B. subnet    

 C. piconet 100%    Correct. 

D. cycle    

Score: 2/2

7. What is the range of transmission for a WPAN?

Page 15: IST236 Chapters 01, 02 & 03 Test Review 1

 

A. 3 feet    

 B. 10 feet 100%    Correct. 

C. 14 feet    

D. 22 feet    

8. The ____ technology has a transmission distance of up to 10 meters.

 

  Student Response Value Correct Answer Feedback

A. RFID    

 B. Bluetooth 100%    Correct. 

C. WiMax    

D. GSM    

9. What type of device is in this picture?

 

A. RFID device    

B. Bluetooth device    

 C. Free space optics transceiver 100%     

D. Global Systems for Mobile Communications    

10. Where can a RFID tag be read?

 

A. only when next to the scanner    

B. anywhere within the range of a transmitted radio signal 100%    Correct. 

C. only within the line of sight of the scanner    

D. when physically connected to the scanner    

11. What is the maximum transmission distance for FSO?

 

A. 4 miles 100%    Correct. 

B. 6.4 miles    

C. 10 miles    

D. 100 miles    

12. Which sector of the economy has adopted wireless technology most completely?

 

 A. education    

B. construction    

C. travel 100%    Correct

D. business    

Score: 1/1

13. An increasingly ____ workforce is one characteristic of today’s business world.

Page 16: IST236 Chapters 01, 02 & 03 Test Review 1

 

A. less experienced    

B. technically challenged    

C. younger    

 D. mobile 100%    Correct.

14._____ is a low-power wireless data and voice transmission technology that can be used anywhere a small stream of data needs to flow

 

A. GSM    

B. RFID    

 C. Bluetooth 100%     

D. WAP    

15.The _____ acts as a base station to receive the signals and transmits signals back to the wireless network interface cards in the other wireless devices as well as connect to a wired network

 

 A. access point 100%     

B. wireless network interface card    

C. FSO    

D. Wireless Packet Transfer Gateway (WiPTG)    

16.Free space optics (FSO) is an alternative to high-speed fiber optic transmissions that uses low-powered infrared beams. True or False?

  A. True 100%     

B. False    

17. Match each term with the correct statement below.

 

g.  wireless application protocolb.  free space opticsd.  radio modulesf.  war driving

i.  fixed broadband wireless c.  link manager

h.  wireless adapterj.  radio frequency identificatione.  WAP gatewaya.  piconet

1.  provides a standard way to transmit, format, and display Internet data for devices like cell phones and handheld devices2.  alternative to high-speed fiber optic transmissions3.  small radio transceivers built onto microprocessor chips4.  unauthorized individuals actively searching for wireless signals to pick up5.  wireless transmissions between devices that cannot be mobile6.  special software that helps identify other Bluetooth devices

7.  wireless NIC8.  tags used to identify items

9.  translates between WML and HTML10.  a Bluetooth network

18. Beginning with Windows ____, all Microsoft desktop operating systems recognize a wireless NIC

Page 17: IST236 Chapters 01, 02 & 03 Test Review 1

without the need for any external software drivers.

 

A. NT    

B. ME    

C. 2000    

D. XP 100%    Correct.<br/><br/>

19. The radio frequency spectrum is divided into ____ different sections or bands.

 

A. 300    

 B. 450 100%    Correct. 

C. 900    

D. 1200    

20. Which IEEE committee establishes standards for wireless wide area networks?

 

A. 802.3    

B. 802.11    

C. 802.13    

 D. 802.16 100%    Correct. 

21. Label the correct operating mode for the two remote wireless bridges shown in the diagram below:

 1.  root  50% Contains root (50%) Contains non-root (50%)

2.  Non root   50% Contains root (50%) Contains non-root (50%)

22. What function is performed by a wireless gateway?

 

A. authentication    

B. encryption    

C. bandwidth management    

 D. All of the above 100%    Correct.<br/><br/>

23. In the pictures below, what is the name of the device that the PDA is in?

 

A. dock    

B. port replicator    

C. tray    

D. cradle    

 E. sled 100%     

24. Which type of remote wireless bridge connection is used to connect multiple LAN segments together?

  A. segment-to-segment    

B. multipoint-to-multipoint    

Page 18: IST236 Chapters 01, 02 & 03 Test Review 1

C. point-to-point    

D. point-to-multipoint 100%    Correct

25. The 802.11b standard can support wireless devices that are up to ____ meters apart.

 

A. 30    

B. 90    

C. 115 100%    Correct. 

D. 130    

26. What type of transmission is shown in the picture below?

 

A. Directed transmission    

B. LOS transmission    

C. Diffused transmission 100%     

D. Refracted transmission    

E. Directional transmission    

27. What is the device shown in the picture below?

 

A. Remote wireless server    

B. Remote wireless hub    

C. Remote wireless router    

D. Remote wireless switch    

 E. Remote wireless bridge 100%     

28. The IEEE 802.11 standard outlines the use of ____ transmissions for WLANs.

 

A. diffused infrared 100%     

B. directed infrared    

C. radio wave  

D. gallium arsenide    

29.A device called a ____ must sometimes be attached to a PDA in order to establish a wireless connection.  The device contains a slot for a wireless NIC or similar device.

 

A. shoe    

B. slot    

C. sled 100%    Correct. 

D. bridge    

30.An access point has a(n) ____ wired network interface that allows it to connect by cable to a standard wired network.

Page 19: IST236 Chapters 01, 02 & 03 Test Review 1

 

A. IEEE 802    

 B. RJ-45 100%    Correct. 

C. compact flash    

D. PCI    

31.When a business is registered as a ____ they are qualified be placed in an online database of wireless hotspot locations.

 

A. Wi-Fi Alliance member    

 B. Wi-Fi Zone 100%    Correct. 

C. SOHO    

D. WECA    

32. A wireless client network interface card performs each of the following tasks except

 

A. transmitting the packet over radio waves    

B. determining when to send the packet 0%    

C. dividing data it into packets    

D. sending packets to a wired network through a root remote wireless bridge

    

Score: 0/1

 

33.

 

Both point-to-point and point-to-multipoint configurations can be supported by a remote wireless bridge. True or False?

  Student Response Value Correct Answer Feedback

 A. True 100%     

B. False    

Score: 1/1

 

34.

 

Power over Ethernet allows wireless client network adapter cards to be placed in locations even though there is not an electrical outlet nearby. True or False?

  Student Response Value Correct Answer Feedback

A. True    

 B. False 100%     

Score: 1/1

 

Page 20: IST236 Chapters 01, 02 & 03 Test Review 1

35.

 

A remote wireless bridge can only connect wireless networks together. True or False?

  Student Response Value Correct Answer Feedback

A. True    

 B. False 100%     

36. Each of the following is a wireless LAN device except

 

  Student Response Value Correct Answer Feedback

A. wireless client network interface card    

B. wireless gateway    

 C. access portal 100%     

D. remote wireless bridge    

37. Match each term with the correct statement below.

 

d.  FCC

a.  NIC

h.  wireless gateway

g.  flash memory

e.  de facto standard

i.  mini PCI

b.  de jure standards

c.  bridgej.  IEEE

f.  PoE

1.  serves as the primary regulatory agency for wireless communications in the United States and its territorial possessions2.  device that connects the computer to the network so that it can send and receive data3.  device that combines wireless management and security in a single appliance4.  type of solid-state (microchip) storage technology in which there are no moving parts5.  common practices that the industry follows for various reasons, ranging from ease of use to tradition to what the majority of the users do6.  small card that is functionally equivalent to a standard PCI expansion card7.  standards that are controlled by an organization or body that has been entrusted with that task8.  device that is used to connect two network segments together9.  world’s largest technical professional society with members around the globe10.  a technology that sends an electrical current through unused wires of an Ethernet cale

38.A basic rule of thumb in dealing with RF power gain and loss is know as the 10's and 3's Rules of RF Math. Referring to the table below, match up the percentage of power lost or gained in the table:

  Statement Response Value Correct Match

Box A 50% Lost 25.0% 50% Lost

Box B 100% Gained 25.0% 100% Gained

Box C 90% Lost 25.0% 90% Lost

Page 21: IST236 Chapters 01, 02 & 03 Test Review 1

Box D 1,000% Gained 25.0% 1,000% Gained

Score: 2/2

 

39.

 

Loss of signal (attenuation) can be caused by many factors. Which one of these factors is shown in this drawing?

  Student Response Value Correct Answer Feedback

A. Scattering    

 B. VSWR 100%     

C. Refraction    

D. Reflection    

E. Absorption    

F. Diffraction    

Score: 2/2

 

40.

 

The length of an antenna should be about ____ the wavelength.

  Student Response Value Correct Answer Feedback

A. 1/10 of    

 B. 1/4 of 100%    Correct. 

C. 1/2 of    

D. equal to    

Score: 2/2

 

41.

  What type of modulation is shown in the waveform below?

  Student Response Value Correct Answer Feedback

A. Quadtrature modulation (QM)    

 B. Amplitude Modulation (AM) 100%     

C. Phase modulcations (PM)    

Page 22: IST236 Chapters 01, 02 & 03 Test Review 1

D. Frequency Modulation (FM)    

Score: 2/2

 

42.

 

A loss of 10 decibels means that ____ percent of the power has been lost in mW.

  Student Response Value Correct Answer Feedback

A. 10    

B. 30    

 C. 90 100%    Correct. 

D. 100    

Score: 2/2

 

43.

 

What is a problem with measuring RF loss using a linear scale?

  Student Response Value Correct Feedback

 A. it does not reveal what the loss is in relation to the whole 100%    Correct. 

B. it is inaccurate    

C. it is difficult to calculate    

D. it requires complex measurements    

Score: 2/2

 

44.

 

____ antennas are used for long distance, point-to-point wireless links, such as connecting buildings that are up to 42 kilometers (25 miles) apart.

A. Fresnel    

B. Omni-directional    

C. Semi-directional    

 D. Highly-directional 100%    Correct.<br/><br/>

45.____ can occur intentionally from an external power source that amplifies the signal, or unintentionally when an RF signal bounces off an object and combines with the original signal to amplify it.

   A. Phase shift

B. Modulation    

C. Loss    

Page 23: IST236 Chapters 01, 02 & 03 Test Review 1

D. Gain     

Score: 0/2

 

46. The drawing below is an example of ______________ propagation.

 

  Student Response Value Correct Answer

1.  RF line of sight  100% Contains LOS (100%) Contains line of sight (100%)

Score: 2/2

 

47.

 

What kind of antenna is shown is this drawing?

  Student Response Value Correct Answer Feedback

A. Highly-directional antenna    

 B. Semi-directional antenna 100%     

C. Omni-directional antenna    

D. Dipole antenna    

Score: 2/2

 

48.

 

What is the shape of a Fresnel zone?

  Student Response Value Correct Answer Feedback

A. Circular    

B. Rectangular    

 C. Ellipsoidal 100%    Correct. 

D. Elliptical    

Score: 1/1

 

49.

  The term ____ describes the rate of electrical flow.

  Student Response Value Correct Answer Feedback

A. voltage    

 B. current 100%    Correct. 

C. resistance    

Page 24: IST236 Chapters 01, 02 & 03 Test Review 1

D. electrical power    

Score: 1/1

 

50.

 

Which of the following units is used to measure frequency?

  Student Response Value Correct Answer Feedback

A. decibel    

B. volt    

 C. hertz 100%    Correct. 

D. byte    

Score: 1/1

 

51. Which of the following types of wave is imperceptible?

 

A. light    

 B. radio 100%    Correct. 

C. heat    

D. ether    

52. Which type of RF loss is caused by the equipment transmitting the signal?

 

A. Scattering    

 B. Voltage Standing Wave Ratio 100%    Correct. 

C. Diffraction    

D. Absorption    

53. Wireless LAN transmissions are analog and not digital. True or False?

 A. True    

 B. False 100%     

54. Voltage is equal to current times resistance, or V=I*R. True or False?

  A. True 100%     

B. False    

55. How often an event occurs can create different

  A. modulations    

 B. frequencies 100%     

C. cycles    

Page 25: IST236 Chapters 01, 02 & 03 Test Review 1

D. gigapops (GPS)    

56. A _____ is a million hertz.

 

A. kilohertz    

 B. megahertz 100%     

C. gigahertz    

D. millihertz    

57. Changes in frequency are illustrated by an up-and-down wave called a (n)

 

A. sine wave 100%     

B. oscillation modulation    

C. X-Z point graph    

D. AC/DC time line    

58. Match each term with the correct statement below.

 

d.  electrical powerj.  oscillating signal e.  polarizationf.  frequency h.  diffractiona.  modulationi.  voltage c.  lossg.  scattering

b.  amps

1.  voltage multiplied by the current2.  up-and-down wave3.  orientation of the radio waves as they leave the antenna4.  rate at which an event occurs5.  bending caused by an object in the path of the transmission6.  changes to a signal that can be made to enable it to carry information7.  equal to current times resistance8.  negative difference in amplitude between signals9.  occurs when the RF signal comes in contact with elements in the air, such as rain or heavy dust particles10.  measure of the flow of electrical current

Score: 5/5