AIOU test 5/01/2023

1) The diameter of fiber optical cable is:

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

3) An important property of fiber optic cable is:

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

5) BCD stands for:

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

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

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

9) What is another term for guided media?

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

11) EBCDIC is a

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

13) ASCII code was.developed by:

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

15) Bps is short for:

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

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

18) Digital signal represents a sequence of values.

19) BCD code is a_

20) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

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

26) Which of the following devices uses parallel transmission?

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

28) What is another term for unguided media?

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

30) Internet surfing is an example of:

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

32) How many characters can Unicode represcnt?

33) How many modes of data communication are available?

34) The music and speech.represent:

35) Analog signal is measured in:

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

37) IBM stands for:

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

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

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

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

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

43) Sound,light and radio waves are examples of

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

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

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

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

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

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

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

51) The communication channels can be divided into_categories:

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

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

54) Data is transmitted block by block in: .

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

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

57) Each set of bit pattern is called:

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

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

60) Modem stands for:

61) Unicode uses:

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

63) Transmission media are usually categorized as_

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

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

66) Television and radio broadcasts are examples of:

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

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

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

70) The types.of signals can be:

71) Select unguided media from the following:

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

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

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

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

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

77) Which of the following is the fastest communication mode

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

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

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

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

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

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

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

85) Digital signals are commonly known as:

86) Which of the following technique uses modulation?

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

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

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

90) Computer transmit data in the form of codes.

91) An example of non-numerical data is:

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

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

94) Frequency is measured in:

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

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

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

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

99) Transmission from Earth to satellite is called:

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