AIOU test 5/01/2023

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

2) Computer transmit data in the form of codes.

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

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

5) Which of the following technique uses modulation?

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

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

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

9) Television and radio broadcasts are examples of:

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

11) The diameter of fiber optical cable is:

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

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

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

15) Each set of bit pattern is called:

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

17) Digital signal represents a sequence of values.

18) How many characters can Unicode represcnt?

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

20) Analog signal is measured in:

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

22) Sound,light and radio waves are examples of

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

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

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

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

27) Bps is short for:

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

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

30) The communication channels can be divided into_categories:

31) What is another term for guided media?

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

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

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

35) Which of the following is the fastest communication mode

36) IBM stands for:

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

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

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

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

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

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

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

44) Data is transmitted block by block in: .

45) Which of the following devices uses parallel transmission?

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

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

48) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

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

54) Transmission media are usually categorized as_

55) The types.of signals can be:

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

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

58) Unicode uses:

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

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

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

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

63) EBCDIC is a

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

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

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

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

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

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

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

71) An important property of fiber optic cable is:

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

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

74) BCD stands for:

75) How many modes of data communication are available?

76) ASCII code was.developed by:

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

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

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

80) The music and speech.represent:

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

82) Internet surfing is an example of:

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

84) An example of non-numerical data is:

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

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

87) Digital signals are commonly known as:

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

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

90) Modem stands for:

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

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

93) BCD code is a_

94) Select unguided media from the following:

95) Transmission from Earth to satellite is called:

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

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

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

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

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