AIOU test 5/01/2023

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

2) How many characters can Unicode represcnt?

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

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

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

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

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

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

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

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

11) How many modes of data communication are available?

12) What is another term for unguided media?

13) Which of the following is the fastest communication mode

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

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

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

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

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

19) Bps is short for:

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

21) EBCDIC is a

22) What is another term for guided media?

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

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

25) The communication channels can be divided into_categories:

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

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

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

29) Frequency is measured in:

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

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

32) Computer transmit data in the form of codes.

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

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

35) BCD stands for:

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

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

38) Transmission from Earth to satellite is called:

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

40) Internet surfing is an example of:

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

42) The types.of signals can be:

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

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

45) ASCII code was.developed by:

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

47) Select unguided media from the following:

48) Digital signals are commonly known as:

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

50) Modem stands for:

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

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

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

54) Analog signal is measured in:

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

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

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

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

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

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

61) An example of non-numerical data is:

62) Which of the following devices uses parallel transmission?

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

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

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

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

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

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

69) Sound,light and radio waves are examples of

70) Which of the following technique uses modulation?

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

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

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

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

75) Each set of bit pattern is called:

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

77) An important property of fiber optic cable is:

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

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

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

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

82) Data is transmitted block by block in: .

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

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

85) The music and speech.represent:

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

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

88) Unicode uses:

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

90) BCD code is a_

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

92) The diameter of fiber optical cable is:

93) IBM stands for:

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

95) Transmission media are usually categorized as_

96) Digital signal represents a sequence of values.

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

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

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

100) Television and radio broadcasts are examples of: