AIOU test 5/01/2023

1) Frequency is measured in:

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

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

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

5) Internet surfing is an example of:

6) Unicode uses:

7) Select unguided media from the following:

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

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

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

11) Which of the following devices uses parallel transmission?

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

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

14) Which of the following technique uses modulation?

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

16) Bps is short for:

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

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

19) Transmission media are usually categorized as_

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

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

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

23) Digital signals are commonly known as:

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

25) Digital signal represents a sequence of values.

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

27) IBM stands for:

28) Analog signal is measured in:

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

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

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

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

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

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

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

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

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

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

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

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

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

42) Modem stands for:

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

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

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

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

47) How many characters can Unicode represcnt?

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

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

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

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

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

53) EBCDIC is a

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

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

56) Television and radio broadcasts are examples of:

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

58) BCD stands for:

59) The music and speech.represent:

60) Transmission from Earth to satellite is called:

61) BCD code is a_

62) Sound,light and radio waves are examples of

63) Computer transmit data in the form of codes.

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

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

66) The communication channels can be divided into_categories:

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

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

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

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

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

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

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

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

75) Data is transmitted block by block in: .

76) The diameter of fiber optical cable is:

77) Which of the following is the fastest communication mode

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

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

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

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

82) What is another term for unguided media?

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

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

85) Each set of bit pattern is called:

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

87) An example of non-numerical data is:

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

89) What is another term for guided media?

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

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

92) ASCII code was.developed by:

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

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

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

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

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

98) An advantage of synchronous over asynchronous transmission is:

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

100) How many modes of data communication are available?