AIOU test 5/01/2023

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

2) Which of the following technique uses modulation?

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

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

5) Digital signals are commonly known as:

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

7) BCD stands for:

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

9) Bps is short for:

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

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

12) What is another term for guided media?

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

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

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

16) Internet surfing is an example of:

17) Digital signal represents a sequence of values.

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

19) Transmission from Earth to satellite is called:

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

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

22) Each set of bit pattern is called:

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

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

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

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

27) How many characters can Unicode represcnt?

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

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

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

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

32) Analog signal is measured in:

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

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

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

36) BCD code is a_

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

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

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

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

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

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

43) Frequency is measured in:

44) The communication channels can be divided into_categories:

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

46) Computer transmit data in the form of codes.

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

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

49) ASCII code was.developed by:

50) Unicode uses:

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

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

53) The music and speech.represent:

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

55) EBCDIC is a

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

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

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

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

60) How many modes of data communication are available?

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

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

63) An example of non-numerical data is:

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

65) Sound,light and radio waves are examples of

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

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

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

69) The types.of signals can be:

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

71) Transmission media are usually categorized as_

72) Television and radio broadcasts are examples of:

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

74) The diameter of fiber optical cable is:

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

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

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

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

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

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

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

82) IBM stands for:

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

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

85) Which of the following is the fastest communication mode

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

87) Select unguided media from the following:

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

89) An advantage of synchronous over asynchronous transmission is:

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

91) Which of the following devices uses parallel transmission?

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

93) Data is transmitted block by block in: .

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

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

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

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

98) Modem stands for:

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

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