Aiou Workshop 5403| Test 4

1) Defacto means:

2) Frequency is measured in:

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

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

5) Which is NOT a LAN protocol?

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

7) Analog signal is measured in:

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

9) The physical layout of a network is known as:

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

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

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

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

14) Which of the following devices uses parallel transmission?

15) Television and radio broadcasts are examples of:

16) Modem stands for:

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

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

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

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

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

22) Computer networks are the convergence of two important technologies

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

24) What layer of OSI models performs data compression?

25) The most commonly used LAN protocol is:

26) The services on the Internet include

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

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

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

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

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

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

33) The types.of signals can be:

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

35) LAN does not use:

36) Digital signals are commonly known as:

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

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

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

40) Transmission media are usually categorized as_

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

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

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

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

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

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

47) Mobile phone(Cellular) systems often use:

48) A device used to connect similar networks is called:

49) FDDI is a __________network.

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

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

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

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

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

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

56) A network that transmits data over citywide distance faster than LAN is:

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

58) The communication across WAN occurs using:

59) The process of transferring a file from remote computer to local computer on network is called

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

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

62) Which of the following is NOT a type of protocol?

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

64) IBM stands for:

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

66) Each computer on a network is called a:

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

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

69) Computer transmit data in the form of codes.

70) OSI stands for:

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

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

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

74) NIC allows direct connection to:

75) Bps is short for:

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

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

78) DSL stands for

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

80) A network that covers a large geographic distance such as a country is called a:

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

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

83) Each set of bit pattern is called:

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

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

86) Terminal is a:

87) How many types of network standard are there

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

89) OSI reference model has:

90) The_________layer is the layer closest to the transmission medium

91) A LAN is a combination of:

92) An advantage of synchronous over asynchronous transmission is:

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

94) What type of network is the Internet?

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

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

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

98) Which network covers a large area:

99) Which of the following is communications device

100) Many networks include a central computer called: