AIOU test 5/01/2023

1) Bps is short for:

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

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

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

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

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

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

8) Digital signals are commonly known as:

9) Television and radio broadcasts are examples of:

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

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

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

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

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

15) The music and speech.represent:

16) Frequency is measured in:

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

18) Transmission from Earth to satellite is called:

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

20) EBCDIC is a

21) Computer transmit data in the form of codes.

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

23) Digital signal represents a sequence of values.

24) Analog signal is measured in:

25) An example of non-numerical data is:

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

27) The communication channels can be divided into_categories:

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

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

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

31) Data is transmitted block by block in: .

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

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

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

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

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

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

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

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

40) Unicode uses:

41) The diameter of fiber optical cable is:

42) Modem stands for:

43) How many modes of data communication are available?

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

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

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

47) Which of the following is the fastest communication mode

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

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

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

51) BCD stands for:

52) The types.of signals can be:

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

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

55) Transmission media are usually categorized as_

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

57) Sound,light and radio waves are examples of

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

59) An advantage of synchronous over asynchronous transmission is:

60) Internet surfing is an example of:

61) An important property of fiber optic cable is:

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

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

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

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

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

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

68) ASCII code was.developed by:

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

70) What is another term for unguided media?

71) IBM stands for:

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

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

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

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

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

77) Each set of bit pattern is called:

78) What is another term for guided media?

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

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

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

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

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

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

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

86) Which of the following technique uses modulation?

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

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

89) BCD code is a_

90) How many characters can Unicode represcnt?

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

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

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

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

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

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

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

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

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

100) Select unguided media from the following: