1) How many devices can exist between a sending and receiving host?

2) Digital signals are commonly known as:

3) What binary bits are used to encode digital data?

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

5) Bps is short for:

6) What is another term for unguided media?

7) Which of the following coding schemes primarily.used by IBM?

8) The conversation over a walkie-talkie radio is-an example of:

9) Modem stands for:

10) BCD stands for:

11) Computer transmit data in the form of codes.

12) What is another term for guided media?

13) Which of the following transmission media is used in LAN?

14) The transmission rate of modem can be measured in:

15) All of the following are guided communications media EXCEPT:

16) 50.This type of transmission is sometimes called start/stop transmission

17) An important property of fiber optic cable is:

18) Each set of bit pattern is called:

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

20) Which of the following devices uses parallel transmission?

21) Which of the following converts digital signals to analog and analog to digital?

22) Unicode uses:

23) The typical fiber optic cable consists of very narrow strand of glass called:

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

25) Transmission that is used without timing signal is called:

26) The mode that is like a two way street with traffic flowing in both direction at the.same time is ca

27) The communication channels can be divided into_categories:

28) How many characters can Unicode represcnt?

29) All of the following are elements of data communication system EXCEPT:

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

31) The diameter of fiber optical cable is:

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

33) code is 7-bit or.8-bit code.

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

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

36) signal is a continuous electrical signal in the form of wave.

37) Analog signal is measured in:

38) Select unguided media from the following:

39) Transmission from Earth to satellite is called:

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

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

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

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

44) The process of transferring data electronically from one place to another is caled

45) The electromagnetic or light waves representing data are called:

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

47) The types.of signals can be:

48) Data is transmitted block by block in: .

49) Start/stop bits are not required in this type of transmission.

50) Full-duplex communication is made. possible by the.devices known as:

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

52) Most data .transmitted over telephone lines uses:.

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

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

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

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

57) Which modem is used to transmit data signals through air instead of cable?

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

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

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

61) Which of the following is NOT a coding scheme to represent data in computer?

62) BCD code is a_

63) Sound,light and radio waves are examples of

64) How many characters ASCII 8-bit code can represent?

65) An advantage of synchronous over asynchronous transmission is:

66) Television and radio broadcasts are examples of:

67) Which of the following consists of two insulated copper wires twisted together?

68) .The conversation over a walkie-talkie radio is-an example of:

69) Which type of modem can be added to the system unit through expansion slot?

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

71) Which is the most secure type of transmission medium?

72) Which transmission allows data to travel in one direction at a time?

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

74) Digital signal represents a sequence of values.

75) How many modes of data communication are available?

76) ASCII code was.developed by:

77) Which of the following code can represent up to 65,536 symbols?

78) The medium in which signals travel through a cable or wire is called:

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

80) EBCDIC is a

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

82) The computers in wide geographical area can be efficiently connected by:

83) IBM stands for:

84) A type of communication that sends that uses a clock to control timing of bits being sent is called:

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

86) A modem allows computers to access other computers through following types of connection

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

88) Transmission media are usually categorized as_

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

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

91) Transmission from a satellite to its earth-based station is called:

92) The music and speech.represent:

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

94) Which of the following type of data is used to display actions and movement?.

95) Internet surfing is an example of:

96) An example of non-numerical data is:

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

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

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

100) Which of the following is the fastest communication mode