Computer Communications: MCQ

CS200-Chapter8-Homework

Multiple Choice
Identify the choice that best completes the statement or answers the question.

____ 1. Computer communications describes a process in which two or more computers or devices transfer ____.
a.
data
c.
instructions
b.
information
d.
all of the above

____ 2. A communications ____ is a transmission medium on which the data, instructions, or information travels.
a.
route
c.
flow
b.
channel
d.
path

____ 3. Text messaging, also called ____, allows users to send and receive short text messages on a smart phone or mobile device.
a.
TMS
c.
SMS
b.
TXT
d.
TXS

____ 4. Wireless ____ is a real-time Internet communications service that allows you to exchange messages with one or more mobile or online users.
a.
PIM
c.
PDA
b.
GPS
d.
IM

____ 5. ____ messaging, also called MMS, allows users to send graphics, pictures, video clips, and sound files, as well as short text messages to another smart phone, PDA, or computer.
a.
Image
c.
Picture
b.
Graphics
d.
Unicode

____ 6. Some services use the term video ____ to refer separately to the capability of sending video clips.
a.
circuiting
c.
messaging
b.
posting
d.
spotting

____ 7. A(n) ____ is a wireless network that provides Internet connections to mobile computers and other devices.
a.
wi-spot
c.
quick spot
b.
hot link
d.
hot spot

____ 8. All of the following are hot spot technologies EXCEPT ____.
a.
Wi-Fi
c.
IrDA
b.
WiMAX
d.
Bluetooth

____ 9. A(n) ____ is a coffeehouse or restaurant that provides personal computers with Internet access to its customers.
a.
cybercafé
c.
baseband
b.
wi-spot
d.
quick spot

____ 10. A document ____ system provides for storage and management of a company’s documents and allows users to access the documents, depending on their needs.
a.
analysis
c.
preparation
b.
management
d.
storage

____ 11. ____ services describe standardized software that enables programmers to create applications that communicate with other remote computers over the Internet or over an internal business network.
a.
Remote
c.
Server
b.
Client
d.
Web

____ 12. A(n) ____ is a Web application that combines services from two or more sources, creating a new application.
a.
pileup
c.
workgroup
b.
mashup
d.
worknet

____ 13. As shown in the accompanying figure, a ____ is a network that covers a large geographical area, such as a city, country, or the world.
a.
WAN
c.
MAN
b.
LAN
d.
WLAN

____ 14. As shown in the accompanying figure, the ____ is the world’s largest WAN.
a.
Internet
c.
Web
b.
Telnet
d.
Usenet

____ 15. As shown in the accompanying figure, a(n) ____ is a network that uses a communications channel combining many types of media such as telephone lines, cables, and radio waves.
a.
EFT
c.
LAN
b.
MAN
d.
WAN

____ 16. As shown in the accompanying figure, on a(n) ____ network one or more computers acts as a server and the other computers on the network request services from the server.
a.
integrated
c.
client/server
b.
baseband
d.
workgroup

____ 17. As shown in the accompanying figure, a(n) ____ controls access to the hardware, software, and other resources on the network and provides a centralized storage area for programs, data, and information.
a.
workgroup
c.
document manager
b.
server
d.
file manager

____ 18. BitTorrent and Gnutella are examples of networking software that support ____ networking technology, as illustrated in the accompanying figure.
a.
LAN
c.
ring
b.
bus
d.
P2P

____ 19. A P2P network like the one in the accompanying figure sometimes is called a(n) ____ network.
a.
bus
c.
communications
b.
file sharing
d.
RFID

____ 20. A type of peer-to-peer network shown in the accompanying figure, called ____, describes an Internet network, on which users access each other’s hard disks and exchange files directly.
a.
file exchanging
c.
sending network
b.
P2P
d.
FTTH

____ 21. A network ____, like the one shown in the accompanying figure, refers to the layout of the computers and devices in a communications network.
a.
topology
c.
latency
b.
mapping
d.
volume

____ 22. On a(n) ____ network like the one in the accompanying figure, all of the computers and devices on the network connect to a central device.
a.
ring
c.
token ring
b.
star
d.
bus

____ 23. A ____ network consists of a single central cable, to which all computers and other devices connect.
a.
ring
c.
token ring
b.
star
d.
bus

____ 24. A(n) ____ is an internal network that uses Internet technologies.
a.
workgroup
c.
intranet
b.
sharenet
d.
ATM

____ 25. ____, or 802.16, is a newer network standard developed by IEEE that specifies how wireless devices communicate over the air in a wide area.
a.
ISDN
c.
T3
b.
CATV
d.
WiMAX

____ 26. Which is the fastest type of line?
a.
ISDN
c.
T3
b.
CATV
d.
ATM

____ 27. A(n) ____ line is any of several types of long-distance digital telephone lines that carry multiple signals over a single communications line.
a.
ATM
c.
DSL
b.
ADSL
d.
T-carrier

____ 28. Telephone networks, the Internet, and other networks with large amounts of traffic use ____.
a.
DSL
c.
ISDN
b.
T1 lines
d.
ATM

____ 29. A(n) ____ device is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device.
a.
channel
c.
network
b.
communications
d.
licensed

____ 30. A(n) ____ card is a USB network adapter, ExpressCard module, PC Card, or flash card that enables a computer or device to access a network.
a.
channel
c.
communications
b.
network
d.
licensed

____ 31. A(n) ____ is a communications device that connects multiple computers or routers together and transmits data to its correct destination on the network.
a.
multiplexer
c.
router
b.
concord
d.
index

____ 32. Most home networks use a Wi-Fi network, which sends signals through the air at distances of up to ____ feet in some configurations.
a.
50
c.
150
b.
100
d.
1,500

____ 33. All of the following are types of wired home networks EXCEPT ____.
a.
Ethernet
c.
phoneline network
b.
powerline cable network
d.
WLAN

____ 34. The amount of data, instructions, or information that can travel over a communications channel sometimes is called the ____.
a.
dimensionality
c.
bandwidth
b.
resolution
d.
broadband

____ 35. Physical transmission media used in communications include ____ cable.
a.
twisted-pair
c.
fiber-optic
b.
coaxial
d.
all of the above

____ 36. ____ is an electrical disturbance that can degrade communications.
a.
RFID
c.
Chatter
b.
Noise
d.
A hot spot

____ 37. The core of a(n) ____ cable consists of dozens or hundreds of thin strands of glass or plastic that use light to transmit signals.
a.
coaxial
c.
fiber-optic
b.
twisted-pair
d.
integrated

____ 38. ____ radio is a wireless transmission medium that distributes radio signals through the air over long distances such as between cities, regions, and countries and short distances such as within an office or home.
a.
Mobile
c.
Bandless
b.
Optical
d.
Broadcast

____ 39. Bluetooth, UWB, Wi-Fi, and WiMAX communications technology use ____.
a.
T1 lines
c.
infrared
b.
broadcast radio signals
d.
microwaves

____ 40. With a satellite Internet connection, ____.
a.
downlinks are slower than uplinks
b.
uplinks are slower than downlinks
c.
uplinks and downlinks go at the same speed
d.
uplink and downlink speeds vary depending on geographical factors

True/False
Indicate whether the statement is true or false.

____ 41. All types of computers and mobile devices serve as sending and receiving devices in a communications system.

____ 42. An online meeting allows users to share documents with others in real time.

____ 43. Home users are the primary users of Web services.

____ 44. A computer voice mail system converts an analog voice message into digital form.

____ 45. Because of their small size, most client/server networks like the one shown in the accompanying figure do not require a person to serve as a network administrator.

____ 46. WAP uses a client/server network like the one in the accompanying figure.

____ 47. A print server is a kind of integrated server.

____ 48. In a peer-to-peer network, each computer has its own printer.

____ 49. Peer-to-peer networks are ideal for large corporations.

____ 50. Networks rarely combine the various kinds of networking topologies that are available.

____ 51. The bus in a bus network like the one in the accompanying figure transmits data, instructions, and information in only one direction.

____ 52. On a star network like the one in the accompanying figure, if one node fails, the devices after the failed device cannot function.

____ 53. Bus networks are popular on LANs because they are inexpensive and easy to install.

____ 54. Ethernet is based on a star topology.

____ 55. In a token ring network, only one token exists per network.

____ 56. Token ring networks can connect an unlimited number of devices.

____ 57. 802.11 also is known as Wi-Fi.

____ 58. Using a dial-up line to transmit data is similar to using the telephone to make a call in that it is not permanent.

____ 59. ADSL is faster when sending data than when receiving data.

____ 60. Some experts predict that ISDN will become the Internet standard for data transmission, replacing T3 lines.

____ 61. The most popular T-carrier line is the T3 line.

____ 62. An analog signal consists of individual electrical pulses that represent bits grouped together into bytes.

____ 63. A digital signal consists of a continuous electrical wave.

____ 64. A dial-up modem usually is in the form of a standalone piece of hardware attached to the computer by a USB cable.

____ 65. Baseband media transmit multiple signals simultaneously.
CS200-Chapter8-Homework
Answer Section

MULTIPLE CHOICE

1. ANS: D PTS: 1 DIF: P REF: 314
OBJ: 1

2. ANS: B PTS: 1 DIF: P REF: 314
OBJ: 1

3. ANS: C PTS: 1 DIF: P REF: 317
OBJ: 2

4. ANS: D PTS: 1 DIF: P REF: 318
OBJ: 2

5. ANS: C PTS: 1 DIF: P REF: 318
OBJ: 2

6. ANS: C PTS: 1 DIF: P REF: 318
OBJ: 2

7. ANS: D PTS: 1 DIF: P REF: 318
OBJ: 2

8. ANS: C PTS: 1 DIF: P REF: 318
OBJ: 2

9. ANS: A PTS: 1 DIF: P REF: 319
OBJ: 2

10. ANS: B PTS: 1 DIF: P REF: 321
OBJ: 2

11. ANS: D PTS: 1 DIF: P REF: 322
OBJ: 2

12. ANS: B PTS: 1 DIF: P REF: 322
OBJ: 2

13. ANS: A PTS: 1 DIF: P REF: 324
OBJ: 3

14. ANS: A PTS: 1 DIF: P REF: 324
OBJ: 3

15. ANS: D PTS: 1 DIF: P REF: 324
OBJ: 3

16. ANS: C PTS: 1 DIF: P REF: 325
OBJ: 3

17. ANS: B PTS: 1 DIF: P REF: 325
OBJ: 3

18. ANS: D PTS: 1 DIF: P REF: 326
OBJ: 3

19. ANS: B PTS: 1 DIF: P REF: 326
OBJ: 3

20. ANS: B PTS: 1 DIF: P REF: 326
OBJ: 3

21. ANS: A PTS: 1 DIF: P REF: 326
OBJ: 3

22. ANS: B PTS: 1 DIF: P REF: 326
OBJ: 3

23. ANS: D PTS: 1 DIF: P REF: 327
OBJ: 3

24. ANS: C PTS: 1 DIF: P REF: 328
OBJ: 3

25. ANS: D PTS: 1 DIF: P REF: 330
OBJ: 3

26. ANS: D PTS: 1 DIF: P REF: 332
OBJ: 5

27. ANS: D PTS: 1 DIF: P REF: 332
OBJ: 5

28. ANS: D PTS: 1 DIF: P REF: 332
OBJ: 5

29. ANS: B PTS: 1 DIF: P REF: 333
OBJ: 6

30. ANS: B PTS: 1 DIF: P REF: 334
OBJ: 6

31. ANS: C PTS: 1 DIF: P REF: 335
OBJ: 7

32. ANS: D PTS: 1 DIF: P REF: 336
OBJ: 7

33. ANS: D PTS: 1 DIF: P REF: 336
OBJ: 7

34. ANS: C PTS: 1 DIF: P REF: 337
OBJ: 7

35. ANS: D PTS: 1 DIF: P REF: 339
OBJ: 8

36. ANS: B PTS: 1 DIF: P REF: 339
OBJ: 8

37. ANS: C PTS: 1 DIF: P REF: 340
OBJ: 8

38. ANS: D PTS: 1 DIF: P REF: 341
OBJ: 8

39. ANS: B PTS: 1 DIF: P REF: 341
OBJ: 8

40. ANS: B PTS: 1 DIF: P REF: 341
OBJ: 8

TRUE/FALSE

41. ANS: T PTS: 1 DIF: P REF: 315
OBJ: 1

42. ANS: T PTS: 1 DIF: P REF: 321
OBJ: 2

43. ANS: F PTS: 1 DIF: P REF: 322
OBJ: 2

44. ANS: T PTS: 1 DIF: P REF: 322
OBJ: 2

45. ANS: F PTS: 1 DIF: P REF: 325
OBJ: 3

46. ANS: T PTS: 1 DIF: P REF: 330
OBJ: 3

47. ANS: F PTS: 1 DIF: P REF: 325
OBJ: 3

48. ANS: F PTS: 1 DIF: P REF: 325
OBJ: 3

49. ANS: F PTS: 1 DIF: P REF: 325
OBJ: 3

50. ANS: F PTS: 1 DIF: P REF: 326
OBJ: 3

51. ANS: F PTS: 1 DIF: P REF: 327
OBJ: 3

52. ANS: F PTS: 1 DIF: P REF: 327
OBJ: 3

53. ANS: F PTS: 1 DIF: P REF: 327
OBJ: 3

54. ANS: F PTS: 1 DIF: P REF: 329
OBJ: 3

55. ANS: T PTS: 1 DIF: P REF: 329
OBJ: 3

56. ANS: F PTS: 1 DIF: P REF: 329
OBJ: 3

57. ANS: T PTS: 1 DIF: P REF: 329
OBJ: 3

58. ANS: T PTS: 1 DIF: P REF: 331
OBJ: 5

59. ANS: F PTS: 1 DIF: P REF: 332
OBJ: 5

60. ANS: F PTS: 1 DIF: P REF: 332
OBJ: 5

61. ANS: F PTS: 1 DIF: S REF: 332
OBJ: 2

62. ANS: F PTS: 1 DIF: P REF: 333
OBJ: 6

63. ANS: F PTS: 1 DIF: P REF: 333
OBJ: 6

64. ANS: F PTS: 1 DIF: P REF: 333
OBJ: 6

65. ANS: F PTS: 1 DIF: P REF: 338
OBJ: 8