AIOU test 5/01/2023

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

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

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

4) An example of non-numerical data is:

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

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

7) Transmission from Earth to satellite is called:

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

9) Frequency is measured in:

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

11) Which of the following is the fastest communication mode

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

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

14) How many characters can Unicode represcnt?

15) Which of the following technique uses modulation?

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

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

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

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

20) BCD stands for:

21) Unicode uses:

22) The music and speech.represent:

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

24) Select unguided media from the following:

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

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

27) Modem stands for:

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

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

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

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

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

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

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

35) Data is transmitted block by block in: .

36) An important property of fiber optic cable is:

37) An advantage of synchronous over asynchronous transmission is:

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

39) Sound,light and radio waves are examples of

40) Bps is short for:

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

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

43) What is another term for unguided media?

44) Each set of bit pattern is called:

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

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

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

48) Digital signals are commonly known as:

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

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

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

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

53) What is another term for guided media?

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

55) Computer transmit data in the form of codes.

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

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

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

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

60) The diameter of fiber optical cable is:

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

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

63) ASCII code was.developed by:

64) Digital signal represents a sequence of values.

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

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

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

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

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

70) EBCDIC is a

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

72) Internet surfing is an example of:

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

74) The types.of signals can be:

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

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

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

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

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

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

81) Television and radio broadcasts are examples of:

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

83) Transmission media are usually categorized as_

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

85) How many modes of data communication are available?

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

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

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

89) The communication channels can be divided into_categories:

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

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

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

93) IBM stands for:

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

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

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

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

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

99) Analog signal is measured in:

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