Aiou Workshop 5403| Test 4

1) The second layer of OSI model is

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

3) The diameter of fiber optical cable is:

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

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

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

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

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

9) FTP facility is used to:

10) Computer networks are the convergence of two important technologies

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

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

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

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

15) Analog signal is measured in:

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

17) What is another term for unguided media?

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

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

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

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

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

23) An advantage of synchronous over asynchronous transmission is:

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

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

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

27) Each set of bit pattern is called:

28) What type of network is the Internet?

29) Which of the following is an internet protocol?

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

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

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

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

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

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

36) Internet surfing is an example of:

37) Which network covers a large area:

38) Which of the following topologies uses routers?

39) De Jure means

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

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

42) A collection of related web pages is called:

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

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

45) Digital signals are commonly known as:

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

47) NIC stands for:

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

49) Terminal is a:

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

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

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

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

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

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

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

57) Sound,light and radio waves are examples of

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

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

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

61) How many pairs of computers can simultaneously communicate on Ethernet LAN?

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

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

64) Transmission media are usually categorized as_

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

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

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

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

69) Which is the most common LAN topology?

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

71) FDDI is a __________network.

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

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

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

75) Mobile phone(Cellular) systems often use:

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

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

78) NIC allows direct connection to:

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

80) The communication channels can be divided into_categories:

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

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

83) Project 802 defines standard for which layers of the OSI model:

84) BCD code is a_

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

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

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

88) The most commonly used LAN protocol is:

89) DSL stands for

90) The music and speech.represent:

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

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

93) What layer of OSI models performs data compression?

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

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

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

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

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

99) The types.of signals can be:

100) Digital signal represents a sequence of values.