AIOU test 5/01/2023

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

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

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

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

5) EBCDIC is a

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

7) Computer transmit data in the form of codes.

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

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

10) What is another term for guided media?

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

12) Digital signals are commonly known as:

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

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

15) An important property of fiber optic cable is:

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

17) The music and speech.represent:

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

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

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

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

22) Unicode uses:

23) The communication channels can be divided into_categories:

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

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

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

27) Select unguided media from the following:

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

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

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

31) Modem stands for:

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

33) Which of the following is the fastest communication mode

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

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

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

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

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

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

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

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

42) Internet surfing is an example of:

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

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

45) How many modes of data communication are available?

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

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

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

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

50) Transmission from Earth to satellite is called:

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

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

53) Bps is short for:

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

55) Sound,light and radio waves are examples of

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

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

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

59) Television and radio broadcasts are examples of:

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

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

62) Analog signal is measured in:

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

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

65) Transmission media are usually categorized as_

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

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

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

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

70) Data is transmitted block by block in: .

71) The diameter of fiber optical cable is:

72) Frequency is measured in:

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

74) What is another term for unguided media?

75) Each set of bit pattern is called:

76) BCD stands for:

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

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

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

80) Which of the following devices uses parallel transmission?

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

82) IBM stands for:

83) ASCII code was.developed by:

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

85) Digital signal represents a sequence of values.

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

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

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

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

90) The types.of signals can be:

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

92) An advantage of synchronous over asynchronous transmission is:

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

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

95) An example of non-numerical data is:

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

97) BCD code is a_

98) How many characters can Unicode represcnt?

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

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