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

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

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

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

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

6) Digital signals are commonly known as:

7) What is another term for unguided media?

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

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

10) Internet surfing is an example of:

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

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

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

14) Digital signal represents a sequence of values.

15) Unicode uses:

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

17) Analog signal is measured in:

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

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

20) What is another term for guided media?

21) Sound,light and radio waves are examples of

22) BCD stands for:

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

24) Which of the following devices uses parallel transmission?

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

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

27) EBCDIC is a

28) How many characters can Unicode represcnt?

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

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

31) Bps is short for:

32) ASCII code was.developed by:

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

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

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

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

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

38) The communication channels can be divided into_categories:

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

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

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

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

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

44) Television and radio broadcasts are examples of:

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

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

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

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

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

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

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

52) IBM stands for:

53) Computer transmit data in the form of codes.

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

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

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

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

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

59) Transmission from Earth to satellite is called:

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

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

62) Which of the following technique uses modulation?

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

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

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

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

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

68) Select unguided media from the following:

69) Frequency is measured in:

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

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

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

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

74) An example of non-numerical data is:

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

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

77) How many modes of data communication are available?

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

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

80) Data is transmitted block by block in: .

81) Which of the following is the fastest communication mode

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

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

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

85) An important property of fiber optic cable is:

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

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

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

89) The music and speech.represent:

90) BCD code is a_

91) Modem stands for:

92) Transmission media are usually categorized as_

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

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

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

96) Each set of bit pattern is called:

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

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

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

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