AIOU test 5/01/2023

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

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

3) An example of non-numerical data is:

4) Bps is short for:

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

6) Transmission from Earth to satellite is called:

7) Transmission media are usually categorized as_

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

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

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

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

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

13) ASCII code was.developed by:

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

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

16) Select unguided media from the following:

17) BCD stands for:

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

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

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

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

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

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

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

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

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

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

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

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

30) What is another term for guided media?

31) EBCDIC is a

32) Frequency is measured in:

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

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

35) What is another term for unguided media?

36) Digital signal represents a sequence of values.

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

38) Which of the following is the fastest communication mode

39) Television and radio broadcasts are examples of:

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

41) Sound,light and radio waves are examples of

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

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

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

45) IBM stands for:

46) Modem stands for:

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

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

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

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

51) Which of the following technique uses modulation?

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

53) BCD code is a_

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

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

56) Which of the following devices uses parallel transmission?

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

58) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

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

64) How many modes of data communication are available?

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

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

67) The diameter of fiber optical cable is:

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

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

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

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

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

73) Internet surfing is an example of:

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

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

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

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

78) How many characters can Unicode represcnt?

79) The communication channels can be divided into_categories:

80) Computer transmit data in the form of codes.

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

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

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

84) The types.of signals can be:

85) Each set of bit pattern is called:

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

87) Unicode uses:

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

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

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

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

92) Analog signal is measured in:

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

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

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

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

97) An important property of fiber optic cable is:

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

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

100) The music and speech.represent: