1) Which communications medium requires line-of-sight?

2) A device used to connect similar networks is called:

3) The set of rules to exchange data in a communications network is called:

4) Satellite transmission stations that can both send and receive messages are called:

5) A device that is used to connect two computers using telephone line is called:

6) Which of the following cables consists of a single core of solid copper?

7) Which of the following topologies uses routers?

8) BCD code is a_

9) How many characters can Unicode represcnt?

10) The’transmission in which data can be received and. sent simultaneously is called:

11) The internal transfer of binary data in a computer uses mode.

12) Cabling on a linear bus topology can be extended using which of following?

13) Which communication technique can transmit the data over long distance?

14) The topology used for a small number of computers is called:

15) Data is transmitted block by block in: .

16) Which of the following technique uses modulation?

17) De Jure means

18) Unicode uses:

19) The layer that provides services that directly support user application:

20) Data link have two separate sub-layers known as:

21) Which of the following is the insulation on a fiber-optic cable?

22) The services on the Internet include

23) Defacto means:

24) The process of converting analog to digital signal is known as:

25) Which of the following is not a:data communication mode?

26) Which one is NOT a De-jure standard?

27) The chart,graph,pictures and freehand drawing are examples of:

28) IBM stands for:

29) Which of the following is NOT a category of network?

30) A network that covers a large geographic distance such as a country is called a:

31) How many characters ASCII 7-bit code can represent?

32) A collection of related web pages is called:

33) A set collection of a large number of computers all over world connected to one another is called

34) The signals produced by a computer to send over phone line must be converted to:

35) LAN does not use:

36) A network that transmits data over citywide distance faster than LAN is:

37) The height of wave within a given period of time is known as:

38) .Which transmission type transmits data one character at a time

39) A fiber-optic cable’s core is measured in:

40) Which value in start bit indicates that the transmission line is idle?

41) DSL stands for

42) Which of the following consists of thin glass to transmit beams of light?

43) Which of the following features is provided with a modem?

44) The number of times a wave repeats during a specific time interval is called

45) A network that places all nodes on a single cable is called:

46) How many modes of data communication are available?

47) Which of the following is a De Facto standard?

48) What is another term for guided media?

49) The layer lies between the network layer and the application layer

50) The process of converting a digital signal to an analog signal is called:

51) Which of the following is NOT a network topology?

52) The ITU was formerly known as:

53) Which of the following can severally affect the quality of satellite transmission?

54) A type of communication that sends data using flow control to synchronize data between sender

55) What layer of OSI models performs data compression?

56) Which of the following is not a communication media?

57) The communication across WAN occurs using:

58) Which network covers a large area:

59) Frequency is measured in:

60) ISDN stands for:

61) The number of frequencies that can fit on a link at one time is called:

62) What type of network is the Internet?

63) The layer that is in between of session and application layer is

64) NIC allows direct connection to:

65) Mobile phone(Cellular) systems often use:

66) Bps is short for:

67) The act of listening to the medium for a message is called:

68) The time taken by a data signal to reach to moon and then back to earth was about:

69) A collection of computers connected together to share resources and informal called:

70) Which of the following devices uses parallel transmission?

71) Project 802 defines standard for which layers of the OSI model:

72) Physical path that connects the source and receiver is known as:

73) Television and radio broadcasts are examples of:

74) The process of transferring a file from remote computer to local computer on network is called

75) The number of times a wave repeats during a specific time interval is called

76) A set of documents stored on computer permanently connected with Internet is:

77) The types.of signals can be:

78) Which of the following coding schemes uses 4-bit code?

79) A telephone conversation is’an example of:.

80) An important property of fiber optic cable is:

81) A computer network must contain at least number of computers:

82) Each computer on a network is called a:

83) Which medium transmits voice and data via air as high-frequency radio waves?

84) Which kind of signal is mostly required by telephone lines?

85) In the OSI model, encryption and decryption are functions of the________?

86) NIC stands for:

87) The communication channels can be divided into_categories:

88) The message sent on a ____ network can take any of several possible paths from source to destination

89) Which multiplexing technique shifts each signal to a different carrier frequency?

90) Each set of bit pattern is called:

91) The network that connects different campuses of a college in city is an example of:

92) Segmentation and reassembly is the responsibility of:

93) The bottem most layer of the OSI is called:

94) OSI model was created by:

95) Which type of data consists of words,sentences and paragraphs?

96) The_________layer is the layer closest to the transmission medium

97) Which of the following is NOT a benefit of computer networks?

98) Which of the following is the fastest communication mode

99) The technology of long-distance communication is known as:

100) Which layer is responsible to establish, maintain and terminate user connection