AIOU test 5/01/2023

1) Bps is short for:

2) Transmission from Earth to satellite is called:

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

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

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

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

7) An important property of fiber optic cable is:

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

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

10) An example of non-numerical data is:

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

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

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

14) Sound,light and radio waves are examples of

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

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

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

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

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

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

21) The diameter of fiber optical cable is:

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

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

24) Digital signals are commonly known as:

25) What is another term for guided media?

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

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

28) The communication channels can be divided into_categories:

29) Analog signal is measured in:

30) Frequency is measured in:

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

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

33) Internet surfing is an example of:

34) Digital signal represents a sequence of values.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

50) ASCII code was.developed by:

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

52) How many characters can Unicode represcnt?

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

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

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

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

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

58) Each set of bit pattern is called:

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

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

61) Computer transmit data in the form of codes.

62) Which of the following devices uses parallel transmission?

63) Select unguided media from the following:

64) Unicode uses:

65) EBCDIC is a

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

67) Which of the following is the fastest communication mode

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

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

70) Data is transmitted block by block in: .

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

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

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

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

75) An advantage of synchronous over asynchronous transmission is:

76) BCD stands for:

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

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

79) What is another term for unguided media?

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

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

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

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

84) How many modes of data communication are available?

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

86) Which of the following technique uses modulation?

87) IBM stands for:

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

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

90) The types.of signals can be:

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

92) Transmission media are usually categorized as_

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

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

95) Modem stands for:

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

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

98) BCD code is a_

99) Television and radio broadcasts are examples of:

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