AIOU test 5/01/2023

1) The music and speech.represent:

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

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

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

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

6) Data is transmitted block by block in: .

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

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

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

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

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

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

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

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

15) Select unguided media from the following:

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

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

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

19) Transmission media are usually categorized as_

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

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

22) An important property of fiber optic cable is:

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

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

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

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

27) What is another term for guided media?

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

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

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

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

32) Bps is short for:

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

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

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

36) Computer transmit data in the form of codes.

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

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

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

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

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

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

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

44) An example of non-numerical data is:

45) Which of the following devices uses parallel transmission?

46) Which of the following technique uses modulation?

47) Each set of bit pattern is called:

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

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

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

51) Digital signal represents a sequence of values.

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

53) Transmission from Earth to satellite is called:

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

55) The types.of signals can be:

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

57) Which of the following is the fastest communication mode

58) Television and radio broadcasts are examples of:

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

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

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

62) Digital signals are commonly known as:

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

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

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

66) What is another term for unguided media?

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

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

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

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

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

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

73) The communication channels can be divided into_categories:

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

75) IBM stands for:

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

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

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

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

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

81) Analog signal is measured in:

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

83) Unicode uses:

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

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

86) The diameter of fiber optical cable is:

87) ASCII code was.developed by:

88) An advantage of synchronous over asynchronous transmission is:

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

90) Modem stands for:

91) How many modes of data communication are available?

92) Sound,light and radio waves are examples of

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

94) BCD stands for:

95) EBCDIC is a

96) BCD code is a_

97) Frequency is measured in:

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

99) Internet surfing is an example of:

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