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

2) The layer that is concerned with addressing and routing is called:

3) De Jure means

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

5) LAN stands for:

6) Which of the following topologies uses routers?

7) A collection of related web pages is called:

8) The companies that use networks can save time and money because network allow users to share:

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

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

11) An advantage of synchronous over asynchronous transmission is:

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

13) ASCII code was.developed by:

14) Which of the following is NOT a category of network?

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

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

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

18) The message sent on a ____ network can take any of several possible paths from source to destination

19) FTP facility is used to:

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

21) Which of the following is NOT a network topology?

22) The services on the Internet include

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

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

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

26) Which of the following is communications device

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

28) A device that connect multiple network using similar or different protocol is:

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

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

31) Which of the following technique uses modulation?

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

33) MAN stands for:

34) Digital signal represents a sequence of values.

35) Which of the following is the fastest communication mode

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

37) The primary difference between a LAN and a WAN is:

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

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

40) Modem stands for:

41) Transmission from Earth to satellite is called:

42) Each computer on a network is called a:

43) Unicode uses:

44) Which of the following topology is used by Ethernet protocol?

45) NIC allows direct connection to:

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

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

48) OSI model was created by:

49) The layer that is in between of session and application layer is

50) A computer network must contain at least number of computers:

51) The network architecture that allows every computer to act as client as well as a server is:

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

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

54) Which is NOT a LAN protocol?

55) Data link have two separate sub-layers known as:

56) BCD code is a_

57) The layer lies between the network layer and the application layer

58) Segmentation and reassembly is the responsibility of:

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

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

61) Data is transmitted block by block in: .

62) Digital signals are commonly known as:

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

64) The layer that provides services that directly support user application:

65) What is another term for unguided media?

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

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

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

69) The second layer of OSI model is

70) In _________topology, the entire network goes down if the backbone cable fails

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

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

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

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

75) ISDN stands for:

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

77) The diameter of fiber optical cable is:

78) Select unguided media from the following:

79) In WAN, the communication software that allows a personal computer to appear as terminal is call

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

81) Which network covers a large area:

82) Which protocol works on the concepts of ring topology and a token?

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

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

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

86) What layer of OSI models performs data compression?

87) The process of transferring a file from our own computer to the remote computer on a network:

88) A LAN protocol in which all computers and devices on the network pass a special signal known as:

89) OSI stands for:

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

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

92) Analog signal is measured in:

93) Television and radio broadcasts are examples of:

94) FTP stands for

95) Computer transmit data in the form of codes.

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

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

98) LAN does not use:

99) Which of the following is an internet protocol?

100) The_________layer is the layer closest to the transmission medium