AIOU test 5/01/2023

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

2) An important property of fiber optic cable is:

3) What is another term for guided media?

4) What is another term for unguided media?

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

6) Which of the following devices uses parallel transmission?

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

8) Sound,light and radio waves are examples of

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

10) Transmission from Earth to satellite is called:

11) Television and radio broadcasts are examples of:

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

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

14) The communication channels can be divided into_categories:

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

16) Modem stands for:

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

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

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

20) Unicode uses:

21) How many modes of data communication are available?

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

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

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

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

26) Which of the following technique uses modulation?

27) Digital signals are commonly known as:

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

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

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

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

32) Transmission media are usually categorized as_

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

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

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

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

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

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

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

40) Digital signal represents a sequence of values.

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

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

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

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

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

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

47) BCD code is a_

48) The types.of signals can be:

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

50) IBM stands for:

51) An example of non-numerical data is:

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

53) Data is transmitted block by block in: .

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

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

56) Computer transmit data in the form of codes.

57) Which of the following is the fastest communication mode

58) The diameter of fiber optical cable is:

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

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

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

62) Each set of bit pattern is called:

63) Internet surfing is an example of:

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

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

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

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

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

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

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

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

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

73) How many characters can Unicode represcnt?

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

75) Bps is short for:

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

77) Frequency is measured in:

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

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

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

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

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

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

84) BCD stands for:

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

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

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

88) Analog signal is measured in:

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

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

91) Select unguided media from the following:

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

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

94) An advantage of synchronous over asynchronous transmission is:

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

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

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

98) The music and speech.represent:

99) ASCII code was.developed by:

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