AIOU test 5/01/2023

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

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

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

4) An example of non-numerical data is:

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

6) An advantage of synchronous over asynchronous transmission is:

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

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

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

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

11) Digital signals are commonly known as:

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

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

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

15) The music and speech.represent:

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

17) Transmission from Earth to satellite is called:

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

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

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

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

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

23) EBCDIC is a

24) The types.of signals can be:

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

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

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

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

29) Internet surfing is an example of:

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

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

32) Transmission media are usually categorized as_

33) Which of the following devices uses parallel transmission?

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

35) What is another term for guided media?

36) Which of the following technique uses modulation?

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

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

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

40) Each set of bit pattern is called:

41) ASCII code was.developed by:

42) Analog signal is measured in:

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

44) BCD code is a_

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

46) What is another term for unguided media?

47) Modem stands for:

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

49) Frequency is measured in:

50) The communication channels can be divided into_categories:

51) Select unguided media from the following:

52) BCD stands for:

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

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

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

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

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

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

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

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

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

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

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

64) An important property of fiber optic cable is:

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

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

67) Data is transmitted block by block in: .

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

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

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

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

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

73) Which of the following is the fastest communication mode

74) The diameter of fiber optical cable is:

75) Sound,light and radio waves are examples of

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

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

78) Bps is short for:

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

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

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

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

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

84) Digital signal represents a sequence of values.

85) Television and radio broadcasts are examples of:

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

87) How many modes of data communication are available?

88) Unicode uses:

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

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

91) How many characters can Unicode represcnt?

92) Computer transmit data in the form of codes.

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

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

95) IBM stands for:

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

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

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

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

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