AIOU test 5/01/2023

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

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

3) Computer transmit data in the form of codes.

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

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

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

7) Digital signals are commonly known as:

8) Which of the following devices uses parallel transmission?

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

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

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

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

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

14) Internet surfing is an example of:

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

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

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

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

19) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

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

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

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

27) ASCII code was.developed by:

28) Sound,light and radio waves are examples of

29) BCD code is a_

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

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

32) Bps is short for:

33) An important property of fiber optic cable is:

34) How many modes of data communication are available?

35) IBM stands for:

36) EBCDIC is a

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

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

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

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

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

42) Which of the following is the fastest communication mode

43) An example of non-numerical data is:

44) Each set of bit pattern is called:

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

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

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

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

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

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

51) How many characters can Unicode represcnt?

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

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

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

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

56) The types.of signals can be:

57) What is another term for guided media?

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

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

60) The communication channels can be divided into_categories:

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

62) Unicode uses:

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

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

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

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

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

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

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

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

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

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

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

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

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

76) Transmission from Earth to satellite is called:

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

78) Analog signal is measured in:

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

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

81) The music and speech.represent:

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

83) Transmission media are usually categorized as_

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

85) What is another term for unguided media?

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

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

88) Modem stands for:

89) The diameter of fiber optical cable is:

90) Data is transmitted block by block in: .

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

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

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

94) Digital signal represents a sequence of values.

95) Television and radio broadcasts are examples of:

96) Frequency is measured in:

97) Select unguided media from the following:

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

99) Which of the following technique uses modulation?

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