Quiznetik

Computer Networks | Set 3

1. If you want to find the number of routers between a source and destination, the utility to be used is.

A. route

B. ipconfig

C. ifconfig

D. traceroute

Correct : D. traceroute

2. Which of the following is related to ipconfig in Microsoft Windows ?

A. display all current tcp/ip network configuration values

B. modify dhcp settings

C. modify dns settings

D. all of the mentioned

Correct : D. all of the mentioned

3. This allows to check if a domain is available for registration.

A. domain check

B. domain dossier

C. domain lookup

D. none of the mentioned

Correct : A. domain check

4. Choose the wrong statement

A. nslookup is used to query a dns server for dns data

B. ping is used to check connectivity

C. pathping combines the functionality of ping with that of route

D. ifconfig can configure tcp/ip network interface parameters

Correct : C. pathping combines the functionality of ping with that of route

5. Expansion of FTP is

A. fine transfer protocol

B. file transfer protocol

C. first transfer protocol

D. none of the mentioned

Correct : B. file transfer protocol

6. FTP is built on _____ architecture

A. client-server

B. p2p

C. both of the mentioned

D. none of the mentioned

Correct : A. client-server

7. FTP uses _____ parallel TCP connections to transfer a file

A. 1

B. 2

C. 3

D. 4

Correct : B. 2

8. Identify the incorrect statement

A. ftp stands for file transfer protocol

B. ftp uses two parallel tcp connections

C. ftp sends its control information in-band

D. ftp sends exactly one file over the data connection

Correct : C. ftp sends its control information in-band

9. If 5 files are transfered from server A to client B in the same session. The number of TCP connection between A and B is

A. 5

B. 10

C. 2

D. 6

Correct : D. 6

10. FTP server

A. mantains state

B. is stateless

C. has single tcp connection for a file transfer

D. none of the mentioned

Correct : A. mantains state

11. The commands, from client to server, and replies, from server to client, are sent across the control connection in ____ bit ASCII format

A. 8

B. 7

C. 3

D. 5

Correct : B. 7

12. Find the FTP reply whose message is wrongly matched

A. 331 – username ok, password required

B. 425 – can’t open data connection

C. 452 – error writing file

D. 452 – can’t open data connection

Correct : D. 452 – can’t open data connection

13. Mode of data transfer in FTP, where all the is left to TCP

A. stream mode

B. block mode

C. compressed mode

D. none of the mentioned

Correct : A. stream mode

14. The password is sent to the server using _____ command

A. passwd

B. pass

C. password

D. none of the mentioned

Correct : B. pass

15. The number of objects in a Web page which consists of 4 jpeg images and HTML text is ______

A. 4

B. 1

C. 5

D. none of the mentioned

Correct : C. 5

16. The default connection type used by HTTP is _____

A. persistent

B. non-persistent

C. either of the mentioned

D. none of the mentioned

Correct : A. persistent

17. The time taken by a packet to travel from client to server and then back to the client is called ____

A. stt

B. rtt

C. ptt

D. none of the mentioned

Correct : B. rtt

18. The HTTP request message is sent in ____ part of three-way handshake.

A. first

B. second

C. third

D. none of the mentioned

Correct : C. third

19. In the process of fetching a web page from a server the HTTP request/response takes ______ RTTs.

A. 2

B. 1

C. 4

D. 3

Correct : B. 1

20. The first line of HTTP request message is called ____

A. request line

B. header line

C. status line

D. entity line

Correct : A. request line

21. The values GET, POST, HEAD etc are specified in ____ of HTTP message

A. request line

B. header line

C. status line

D. entity body

Correct : A. request line

22. The ______ method when used in the method field, leaves entity body empty.

A. post

B. get

C. both of the mentioned

D. none of the mentioned

Correct : B. get

23. The HTTP response message leaves out the requested object when _____ method is used

A. get

B. post

C. head

D. put

Correct : C. head

24. Find the oddly matched HTTP status codes

A. 200 ok

B. 400 bad request

C. 301 moved permanently

D. 304 not found

Correct : D. 304 not found

25. Which of the following is not correct ?

A. web cache doesnt has its own disk space

B. web cache can act both like server and client

C. web cache might reduce the response time

D. web cache contains copies of recently requested objects

Correct : A. web cache doesnt has its own disk space

26. The conditional GET mechanism

A. imposes conditions on the objects to be requested

B. limits the number of response from a server

C. helps to keep a cache upto date

D. none of the mentioned

Correct : C. helps to keep a cache upto date

27. Which of the following is present in both an HTTP request line and a status line?

A. http version number

B. url

C. method

D. none of the mentioned

Correct : A. http version number

28. Which of the following is not applicable for IP?

A. error reporting

B. handle addressing conventions

C. datagram format

D. packet handling conventions

Correct : A. error reporting

29. Which of the following field in IPv4 datagram is not related to fragmentation?

A. flags

B. offset

C. tos

D. identifier

Correct : C. tos

30. The TTL field has value 10. How many routers (max) can process this datagram?

A. 11

B. 5

C. 10

D. 1

Correct : C. 10

31. If the value in protocol field is 17, the transport layer protocol used is ____.

A. tcp

B. udp

C. either of the mentioned

D. none of the mentioned

Correct : B. udp

32. The data field can carry which of the following?

A. tcp segemnt

B. udp segment

C. icmp messages

D. none of the mentioned

Correct : C. icmp messages

33. What should be the flag value to indicate the last fragment?

A. 0

B. 1

C. ttl value

D. none of the mentioned

Correct : A. 0

34. Which of these is not applicable for IP protocol?

A. is connectionless

B. offer reliable service

C. offer unreliable service

D. none of the mentioned

Correct : B. offer reliable service

35. Fragmentation has following demerits

A. complicates routers

B. open to dos attack

C. overlapping of fragments.

D. all of the mentioned

Correct : D. all of the mentioned

36. Which field helps to check rearrangement of the fragments?

A. offset

B. flag

C. ttl

D. identifer

Correct : A. offset

37. The size of IP address in IPv6 is

A. 4bytes

B. 128bits

C. 8bytes

D. 100bits

Correct : B. 128bits

38. The header length of an IPv6 datagram is _____.

A. 10bytes

B. 25bytes

C. 30bytes

D. 40bytes

Correct : D. 40bytes

39. In the IPv6 header,the traffic class field is similar to which field in the IPv4 header?

A. fragmentation field

B. fast-switching

C. tos field

D. option field

Correct : C. tos field

40. IPv6 doesnot use ______ type of address

A. broadcast

B. multicast

C. anycast

D. none of the mentioned

Correct : A. broadcast

41. These are the features present in IPv4 but not in IPv6.

A. fragmentation

B. header checksum

C. options

D. all of the mentioned

Correct : D. all of the mentioned

42. The ____ field determines the lifetime of IPv6 datagram

A. hop limit

B. ttl

C. next header

D. none of the mentioned

Correct : A. hop limit

43. Dual-stack approach refers to

A. implementing ipv4 with 2 stacks

B. implementing ipv6 with 2 stacks

C. node has both ipv4 and ipv6 support

D. none of the mentioned

Correct : C. node has both ipv4 and ipv6 support

44. The operation of ____________ is based on signals which are multiplexed and added in time domain but they occupy different slots in frequency domain

A. fdm

B. tdm

C. wdm

D. mdm

Correct : A. fdm

45. which of the following is not Guided transmission media

A. twisted pair cables

B. co-axial cables

C. infrared

D. fibre optics

Correct : C. infrared

46. ____________ media is a communication medium which allows the data to get guided along it.

A. transparent

B. cable

C. guided

D. glass

Correct : C. guided

47. Presentation doesn’t perform ________ function

A. translation

B. transmission

C. encryption

D. compression

Correct : B. transmission

48. Below layers are not present in TCP/IP layer.

A. application

B. presentation

C. transport

D. network

Correct : B. presentation

49. Which of the following are not duties of Physical layer

A. bit rate control

B. multiplexing

C. error detection

D. circuit switching

Correct : C. error detection

50. A field in header is used to specify the number of characters in the frame.

A. start bit

B. character count

C. end bit

D. character stuffing

Correct : B. character count

51. The data bit to be transmitted are broken into discrete __________ at the data link layer.

A. frame

B. stuff

C. character

D. data

Correct : A. frame

52. A standard mechanism provided by internet which helps in copying a file from one host to another is known as ________.

A. smtp

B. dns server

C. telnet

D. ftp

Correct : D. ftp

53. Which one of the below is not an component of Internet mail system

A. user agent

B. smtp sender

C. smtp receiver

D. transfer agent

Correct : D. transfer agent

54. How many layers are present in the Internet protocol stack (TCP/IP model)?

A. 5

B. 7

C. 6

D. 10

Correct : A. 5

55. Application layer is implemented in ____________

A. end system

B. nic

C. ethernet

D. packet transport

Correct : A. end system

56. Transport layer is implemented in ______________

A. end system

B. nic

C. ethernet

D. signal transmission

Correct : A. end system

57. The functionalities of the presentation layer include ____________

A. data compression

B. data encryption

C. data description

D. all of the mentioned

Correct : D. all of the mentioned

58. Delimiting and synchronization of data exchange is provided by __________

A. application layer

B. session layer

C. transport layer

D. link layer

Correct : B. session layer

59. Physical or logical arrangement of network is __________

A. topology

B. routing

C. networking

D. control

Correct : A. topology

60. Which network topology requires a central controller or hub?

A. star

B. mesh

C. ring

D. bus

Correct : A. star

61. Data communication system spanning states, countries, or the whole world is ________

A. lan

B. wan

C. man

D. pan

Correct : B. wan

62. Data communication system within a building or campus is________

A. lan

B. wan

C. man

D. pan

Correct : A. lan

63. Which of this is not a guided media?

A. fiber optical cable

B. coaxial cable

C. wireless lan

D. copper wire

Correct : C. wireless lan

64. Coaxial cable consists of _______ concentric copper conductors.

A. 1

B. 2

C. 3

D. 4

Correct : B. 2

65. Fiber optics posses following properties __________

A. immune electromagnetic interference

B. very less signal attenuation

C. very hard to tap

D. all of the mentioned

Correct : D. all of the mentioned

66. If an Optical Carrier is represented as OC-n, generally the link speed equals(in Mbps) __________

A. n*39.8

B. n*51.8

C. 2n*51.8

D. none of the mentioned

Correct : B. n*51.8

67. Radio channels are attractive medium because __________

A. can penetrate walls

B. connectivity can be given to mobile user

C. can carry signals for long distance

D. all of the mentioned

Correct : D. all of the mentioned

68. Geostationary satellites ___________

A. are placed at a fixed point above the earth

B. rotate the earth about a fixed axis

C. rotate the earth about a varying axis

D. all of the mentioned

Correct : A. are placed at a fixed point above the earth

69. Bits can be sent over guided and unguided media as analog signal by ___________

A. digital modulation

B. amplitude modulation

C. frequency modulation

D. phase modulation

Correct : A. digital modulation

70. The physical layer provides __________

A. mechanical specifications of electrical connectors and cables

B. electrical specification of transmission line signal level

C. specification for ir over optical fiber

D. all of the mentioned

Correct : D. all of the mentioned

71. In asynchronous serial communication the physical layer provides ___________

A. start and stop signalling

B. flow control

C. both start & stop signalling and flow control

D. only start signalling

Correct : C. both start & stop signalling and flow control

72. The physical layer is responsible for __________

A. line coding

B. channel coding

C. modulation

D. all of the mentioned

Correct : D. all of the mentioned

73. Wireless transmission of signals can be done via ___________

A. radio waves

B. microwaves

C. infrared

D. all of the mentioned

Correct : D. all of the mentioned

74. Transmission control protocol ___________

A. is a connection-oriented protocol

B. uses a three way handshake to establish a connection

C. receives data from application as a single stream

D. all of the mentioned

Correct : D. all of the mentioned

75. Datagram networks mainly refers to _________

A. connection oriented networks

B. connection less networks

C. telephone networks

D. internetwork

Correct : B. connection less networks

76. The network layer is concerned with __________ of data.

A. bits

B. frames

C. packets

D. bytes

Correct : C. packets

77. Which one of the following is not a function of network layer?

A. routing

B. inter-networking

C. congestion control

D. error control

Correct : D. error control

78. In virtual circuit network each packet contains ___________

A. full source and destination address

B. a short vc number

C. only source address

D. only destination address

Correct : B. a short vc number

79. Which of the following routing algorithms can be used for network layer design?

A. shortest path algorithm

B. distance vector routing

C. link state routing

D. all of the mentioned

Correct : D. all of the mentioned

80. Which of the following is not correct in relation to multi-destination routing?

A. is same as broadcast routing

B. contains the list of all destinations

C. data is not sent by packets

D. there are multiple receivers

Correct : C. data is not sent by packets

81. A subset of a network that includes all the routers but contains no loops is called ________

A. spanning tree

B. spider structure

C. spider tree

D. special tree

Correct : A. spanning tree

82. Which one of the following algorithm is not used for congestion control?

A. traffic aware routing

B. admission control

C. load shedding

D. routing information protocol

Correct : D. routing information protocol

83. The network layer protocol for internet is __________

A. ethernet

B. internet protocol

C. hypertext transfer protocol

D. file transfer protocol

Correct : B. internet protocol

84. ICMP is primarily used for __________

A. error and diagnostic functions

B. addressing

C. forwarding

D. routing

Correct : A. error and diagnostic functions

85. Which of the following are transport layer protocols used in networking?

A. tcp and ftp

B. udp and http

C. tcp and udp

D. http and ftp

Correct : C. tcp and udp

86. Which one of the following is a version of UDP with congestion control?

A. datagram congestion control protocol

B. stream control transmission protocol

C. structured stream transport

D. user congestion control protocol

Correct : A. datagram congestion control protocol

87. A _____ is a TCP name for a transport service access point.

A. port

B. pipe

C. node

D. protocol

Correct : A. port

88. Transport layer protocols deals with ____________

A. application to application communication

B. process to process communication

C. node to node communication

D. man to man communication

Correct : B. process to process communication

89. Which of the following is a transport layer protocol?

A. stream control transmission protocol

B. internet control message protocol

C. neighbor discovery protocol

D. dynamic host configuration protocol

Correct : A. stream control transmission protocol

90. Which of the following computer networks is built on the top of another network?

A. prior network

B. chief network

C. prime network

D. overlay network

Correct : D. overlay network

91. In computer network nodes are _________

A. the computer that originates the data

B. the computer that routes the data

C. the computer that terminates the data

D. all of the mentioned

Correct : D. all of the mentioned

92. Communication channel is shared by all the machines on the network in ________

A. broadcast network

B. unicast network

C. multicast network

D. anycast network

Correct : A. broadcast network

93. Bluetooth is an example of __________

A. personal area network

B. local area network

C. virtual private network

D. wide area network

Correct : A. personal area network

94. A list of protocols used by a system, one protocol per layer, is called ________

A. protocol architecture

B. protocol stack

C. protocol suite

D. protocol system

Correct : B. protocol stack

95. Network congestion occurs _________

A. in case of traffic overloading

B. when a system terminates

C. when connection between two nodes terminates

D. in case of transfer failure

Correct : A. in case of traffic overloading

96. Which of this is not a constituent of residential telephone line?

A. a high-speed downstream channel

B. a medium-speed downstream channel

C. a low-speed downstream channel

D. an ultra-high speed downstream channel

Correct : C. a low-speed downstream channel

97. DSL telcos provide which of the following services?

A. wired phone access

B. isp

C. wired phone access and isp

D. network routing and isp

Correct : C. wired phone access and isp

98. The function of DSLAM is to __________

A. convert analog signals into digital signals

B. convert digital signals into analog signals

C. amplify digital signals

D. de-amplify digital signals

Correct : A. convert analog signals into digital signals

99. Which of the following terms is not associated with DSL?

A. dslam

B. co

C. splitter

D. cmts

Correct : D. cmts

100. HFC contains _______

A. fibre cable

B. coaxial cable

C. a combination of fibre cable and coaxial cable

D. twisted pair cable

Correct : C. a combination of fibre cable and coaxial cable