AIOU test 5/01/2023

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

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

3) Transmission media are usually categorized as_

4) Which of the following is the fastest communication mode

5) Internet surfing is an example of:

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

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

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

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

10) Analog signal is measured in:

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

12) EBCDIC is a

13) Which of the following devices uses parallel transmission?

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

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

16) BCD stands for:

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

18) Modem stands for:

19) Each set of bit pattern is called:

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

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

22) What is another term for guided media?

23) BCD code is a_

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

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

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

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

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

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

30) Select unguided media from the following:

31) What is another term for unguided media?

32) Digital signal represents a sequence of values.

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

34) The types.of signals can be:

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

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

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

38) Transmission from Earth to satellite is called:

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

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

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

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

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

44) The communication channels can be divided into_categories:

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

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

47) The diameter of fiber optical cable is:

48) ASCII code was.developed by:

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

50) An example of non-numerical data is:

51) An important property of fiber optic cable is:

52) Data is transmitted block by block in: .

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

54) IBM stands for:

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

56) How many modes of data communication are available?

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

58) Computer transmit data in the form of codes.

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

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

61) How many characters can Unicode represcnt?

62) Sound,light and radio waves are examples of

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

64) Bps is short for:

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

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

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

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

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

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

71) An advantage of synchronous over asynchronous transmission is:

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

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

74) The music and speech.represent:

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

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

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

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

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

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

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

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

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

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

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

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

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

88) Which of the following technique uses modulation?

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

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

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

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

93) Frequency is measured in:

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

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

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

97) Unicode uses:

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

99) Television and radio broadcasts are examples of:

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