AIOU test 5/01/2023

1) Which of the following is the fastest communication mode

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

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

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

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

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

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

8) Television and radio broadcasts are examples of:

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

10) Computer transmit data in the form of codes.

11) Modem stands for:

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

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

14) The types.of signals can be:

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

16) Select unguided media from the following:

17) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

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

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

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

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

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

27) Bps is short for:

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

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

30) The diameter of fiber optical cable is:

31) Data is transmitted block by block in: .

32) ASCII code was.developed by:

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

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

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

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

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

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

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

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

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

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

43) Unicode uses:

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

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

46) Analog signal is measured in:

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

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

49) Transmission from Earth to satellite is called:

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

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

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

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

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

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

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

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

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

59) Digital signal represents a sequence of values.

60) Internet surfing is an example of:

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

62) An example of non-numerical data is:

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

64) How many characters can Unicode represcnt?

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

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

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

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

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

70) Digital signals are commonly known as:

71) How many modes of data communication are available?

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

73) What is another term for guided media?

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

75) BCD stands for:

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

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

78) An important property of fiber optic cable is:

79) The communication channels can be divided into_categories:

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

81) Frequency is measured in:

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

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

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

85) BCD code is a_

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

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

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

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

90) Each set of bit pattern is called:

91) EBCDIC is a

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

93) What is another term for unguided media?

94) Which of the following devices uses parallel transmission?

95) Transmission media are usually categorized as_

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

97) Which of the following technique uses modulation?

98) Sound,light and radio waves are examples of

99) The music and speech.represent:

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