Aiou Workshop 5403| Test 4

1) Which of the following is communications device

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

3) A network that covers a limited geographic distance such as an office is called:

4) A device that is used to connect two computers using telephone line is called:

5) An advantage of synchronous over asynchronous transmission is:

6) Segmentation and reassembly is the responsibility of:

7) People on LAN can share:

8) Typically, data transfer rate in LAN are of the order of:

9) Which of the following is a De Facto standard?

10) Which problem occurs when two workstations on shared Ethernet try to access LAN at the same time

11) Which LAN access method resolves the contention between two or more nodes by collision detection

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

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

14) The act of listening to the medium for a message is called:

15) Which of following protocols are properly researched, designed and finally published as a standard?

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

17) A set collection of a large number of computers all over world connected to one another is called

18) The music and speech.represent:

19) How many modes of data communication are available?

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

21) The services on the Internet include

22) A computer network in which all computers have equal status and no one have control over others:

23) The bottem most layer of the OSI is called:

24) Cabling on a linear bus topology can be extended using which of following?

25) The network that connects different campuses of a college in city is an example of:

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

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

28) The set of rules to exchange data in a communications network is called:

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

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

31) The top most layer of the OSI is called:

32) A network that places all nodes on a single cable is called:

33) In a typical LAN, each computer on the network is connected through:

34) Which is the most common LAN topology?

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

36) Frequency is measured in:

37) ASCII code was.developed by:

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

39) Which network covers a large area:

40) LAN does not use:

41) A set of documents stored on computer permanently connected with Internet is:

42) BCD code is a_

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

44) One or more computers connected to a hub is called:

45) Which one is NOT a De-jure standard?

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

47) Computer networks are the convergence of two important technologies

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

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

50) A lab with twenty computers and a laser printer is an example_____ of area network

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

52) Mail services are available to network users through the_______layer.

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

54) MAN stands for:

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

56) The technology of long-distance communication is known as:

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

58) Which of the following topologies uses routers?

59) Data link layer lies between the physical layer and the_______layer

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

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

62) The topology used for a small number of computers is called:

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

64) What is another term for guided media?

65) Which of the following is a governing body to approve the network standards?

66) Data is transmitted block by block in: .

67) In star topology, the central device is called:

68) A set collection of a large number of computers all over the world connected to one another is

69) Defacto means:

70) Which layer is responsible to establish, maintain and terminate user connection

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

72) Star topology is less expensive than:

73) The most commonly used LAN protocol is:

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

75) Digital signals are commonly known as:

76) Which of the following devices uses parallel transmission?

77) An important property of fiber optic cable is:

78) Computer transmit data in the form of codes.

79) What is another term for unguided media?

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) Transmission media are usually categorized as_

83) DSL stands for

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

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

86) The layer is used to control how a bit-streams of data is sent and received over physical medium

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

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

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

90) Which of the following is NOT a benefit of computer networks?

91) Which type of network covers a small area?

92) Layer that is responsible for transferring frames is

93) Internet surfing is an example of:

94) Ethernet, Token bus and Token Ring have been defined by:

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

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

97) EBCDIC is a

98) The layer that defines the formats the data uses as it in transmitted on the communication line

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

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