1) What is another term for unguided media?

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

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

4) The communication channels can be divided into_categories:

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

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

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

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

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

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

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

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

13) Modem stands for:

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

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

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

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

18) How many modes of data communication are available?

19) An important property of fiber optic cable is:

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

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

22) Digital signal represents a sequence of values.

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

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

25) BCD stands for:

26) Data is transmitted block by block in: .

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

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

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

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

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

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

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

34) Television and radio broadcasts are examples of:

35) Unicode uses:

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

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

38) Transmission media are usually categorized as_

39) Which of the following technique uses modulation?

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

41) An advantage of synchronous over asynchronous transmission is:

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

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

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

45) EBCDIC is a

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

47) The music and speech.represent:

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

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

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

51) Internet surfing is an example of:

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

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

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

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

56) Which of the following is the fastest communication mode

57) ASCII code was.developed by:

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

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

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

61) Sound,light and radio waves are examples of

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

63) Bps is short for:

64) Each set of bit pattern is called:

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

66) Transmission from Earth to satellite is called:

67) What is another term for guided media?

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

69) Analog signal is measured in:

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

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

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

73) Select unguided media from the following:

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

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

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

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

78) Frequency is measured in:

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

80) How many characters can Unicode represcnt?

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

82) Computer transmit data in the form of codes.

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

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

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

86) Digital signals are commonly known as:

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

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

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

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

91) The types.of signals can be:

92) IBM stands for:

93) An example of non-numerical data is:

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

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

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

97) Which of the following devices uses parallel transmission?

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

99) The diameter of fiber optical cable is:

100) BCD code is a_