AIOU test 5/01/2023

1) An important property of fiber optic cable is:

2) Internet surfing is an example of:

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

4) The types.of signals can be:

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

6) What is another term for unguided media?

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

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

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

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

11) Digital signals are commonly known as:

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

13) An example of non-numerical data is:

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

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

16) Transmission media are usually categorized as_

17) Transmission from Earth to satellite is called:

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

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

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

21) Digital signal represents a sequence of values.

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

23) BCD stands for:

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

25) Analog signal is measured in:

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

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

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

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

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

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

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

33) Which of the following technique uses modulation?

34) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

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

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

41) ASCII code was.developed by:

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

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

44) Modem stands for:

45) How many characters can Unicode represcnt?

46) Bps is short for:

47) EBCDIC is a

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

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

50) Which of the following devices uses parallel transmission?

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

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

53) The diameter of fiber optical cable is:

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

55) Each set of bit pattern is called:

56) How many modes of data communication are available?

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

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

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

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

61) Television and radio broadcasts are examples of:

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

63) Frequency is measured in:

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

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

66) Computer transmit data in the form of codes.

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

68) Which of the following is the fastest communication mode

69) IBM stands for:

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

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

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

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

74) Sound,light and radio waves are examples of

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

76) BCD code is a_

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

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

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

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

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

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

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

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

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

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

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

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

89) The music and speech.represent:

90) Unicode uses:

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

92) What is another term for guided media?

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

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

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

96) Select unguided media from the following:

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

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

99) The communication channels can be divided into_categories:

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