AIOU test 5/01/2023

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

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

3) Which of the following is the fastest communication mode

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

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

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

7) An important property of fiber optic cable is:

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

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

10) Sound,light and radio waves are examples of

11) ASCII code was.developed by:

12) Modem stands for:

13) Computer transmit data in the form of codes.

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

15) The music and speech.represent:

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

17) Transmission from Earth to satellite is called:

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

19) Frequency is measured in:

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

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

22) Digital signals are commonly known as:

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

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

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

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

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

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

29) Which of the following technique uses modulation?

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

31) Television and radio broadcasts are examples of:

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

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

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

35) Unicode uses:

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

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

38) Select unguided media from the following:

39) What is another term for guided media?

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

41) The communication channels can be divided into_categories:

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

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

44) Which of the following devices uses parallel transmission?

45) Bps is short for:

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

47) An example of non-numerical data is:

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

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

50) BCD code is a_

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

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

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

54) What is another term for unguided media?

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

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

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

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

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

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

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

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

63) How many characters can Unicode represcnt?

64) Transmission media are usually categorized as_

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

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

67) Analog signal is measured in:

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

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

70) An advantage of synchronous over asynchronous transmission is:

71) Each set of bit pattern is called:

72) The diameter of fiber optical cable is:

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

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

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

76) How many modes of data communication are available?

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

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

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

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

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

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

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

84) Digital signal represents a sequence of values.

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

86) IBM stands for:

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

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

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

90) BCD stands for:

91) Internet surfing is an example of:

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

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

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

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

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

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

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

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

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