AIOU test 5/01/2023

1) What is another term for unguided media?

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

3) Which of the following is the fastest communication mode

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

5) The types.of signals can be:

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

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

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

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

10) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

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

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

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

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

19) Which of the following technique uses modulation?

20) Digital signal represents a sequence of values.

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

22) Digital signals are commonly known as:

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

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

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

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

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

28) Frequency is measured in:

29) Computer transmit data in the form of codes.

30) ASCII code was.developed by:

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

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

33) Sound,light and radio waves are examples of

34) The diameter of fiber optical cable is:

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

36) Analog signal is measured in:

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

38) An important property of fiber optic cable is:

39) Modem stands for:

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

41) Bps is short for:

42) Select unguided media from the following:

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

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

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

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

47) The communication channels can be divided into_categories:

48) BCD code is a_

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

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

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

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

53) Transmission from Earth to satellite is called:

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

55) How many modes of data communication are available?

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

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

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

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

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

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

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

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

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

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

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

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

68) How many characters can Unicode represcnt?

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

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

71) Each set of bit pattern is called:

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

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

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

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

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

77) What is another term for guided media?

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

79) Transmission media are usually categorized as_

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

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

82) Data is transmitted block by block in: .

83) An example of non-numerical data is:

84) Which of the following devices uses parallel transmission?

85) EBCDIC is a

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

87) IBM stands for:

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

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

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

91) BCD stands for:

92) Internet surfing is an example of:

93) The music and speech.represent:

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

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

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

97) Television and radio broadcasts are examples of:

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

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

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