AIOU test 5/01/2023

1) What is another term for guided media?

2) Digital signal represents a sequence of values.

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

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

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

6) Which of the following is the fastest communication mode

7) Each set of bit pattern is called:

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

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

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

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

12) The music and speech.represent:

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

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

15) Data is transmitted block by block in: .

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

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

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

19) Modem stands for:

20) How many modes of data communication are available?

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

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

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

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

25) Bps is short for:

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

27) The diameter of fiber optical cable is:

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

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

30) Transmission from Earth to satellite is called:

31) Unicode uses:

32) Internet surfing is an example of:

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

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

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

36) Computer transmit data in the form of codes.

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

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

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

40) Transmission media are usually categorized as_

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

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

43) The communication channels can be divided into_categories:

44) BCD stands for:

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

46) IBM stands for:

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

48) How many characters can Unicode represcnt?

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

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

51) Which of the following technique uses modulation?

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

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

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

55) An important property of fiber optic cable is:

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

57) BCD code is a_

58) Digital signals are commonly known as:

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

60) Which of the following devices uses parallel transmission?

61) An advantage of synchronous over asynchronous transmission is:

62) Television and radio broadcasts are examples of:

63) What is another term for unguided media?

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

65) EBCDIC is a

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

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

68) ASCII code was.developed by:

69) Sound,light and radio waves are examples of

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

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

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

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

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

75) The types.of signals can be:

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

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

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

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

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

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

82) An example of non-numerical data is:

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

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

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

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

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

88) Frequency is measured in:

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

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

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

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

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

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

95) Select unguided media from the following:

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

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

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

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

100) Analog signal is measured in: