1. When collection of various computers seems a single coherent system to its client, then it is called
Correct : B. distributed system
2. Two devices are in network if
Correct : A. a process in one device is able to exchange information with a process in another device
3. Which one of the following computer network is built on the top of another network?
Correct : D. overlay network
4. In computer network nodes are
Correct : D. all of the mentioned
5. Communication channel is shared by all the machines on the network in
Correct : A. broadcast network
6. Bluetooth is an example of
Correct : A. personal area network
7. A _____ is a device that forwards packets between networks by processing the routing information included in the packet.
Correct : C. router
8. A list of protocols used by a system, one protocol per layer, is called
Correct : B. protocol stack
9. Network congestion occurs
Correct : A. in case of traffic overloading
10. Which one of the following extends a private network across public networks?
Correct : B. virtual private network
11. OSI stands for
Correct : A. open system interconnection
12. The OSI model has ___ layers.
Correct : D. 7
13. TCP/IP model does not have ______ layer but OSI model have this layer.
Correct : D. both (a) and (b)
14. Which layer links the network support layers and user support layers
Correct : C. transport layer
15. Which address is used in an internet employing the TCP/IP protocols?
Correct : D. all of the mentioned
16. TCP/IP model was developed _____ the OSI model.
Correct : A. prior to
17. Which layer is responsible for process to process delivery?
Correct : B. transport layer
18. Which address identifies a process on a host?
Correct : C. port address
19. Which layer provides the services to user?
Correct : A. application layer
20. Transmission data rate is decided by
Correct : B. physical layer
21. Which transmission media has the highest transmission speed in a network?
Correct : C. optical fiber
22. Bits can be send over guided and unguided media as analog signal by
Correct : A. digital modulation
23. The portion of physical layer that interfaces with the media access control sublayer is called
Correct : A. physical signalling sublayer
24. physical layer provides
Correct : D. all of the mentioned
25. In asynchronous serial communication the physical layer provides
Correct : C. both (a) and (b)
26. The physical layer is responsible for
Correct : D. all of the mentioned
27. The physical layer translates logical communication requests from the ______ into hardware specific operations.
Correct : A. data link layer
28. A single channel is shared by multiple signals by
Correct : C. multiplexing
29. Wireless transmission can be done via
Correct : D. all of the mentioned
30. The data link layer takes the packets from _____ and encapsulates them into frames for transmission.
Correct : A. network layer
31. Which one of the following task is not done by data link layer?
Correct : D. channel coding
32. Which sublayer of the data link layer performs data link functions that depend upon the type of medium?
Correct : B. media access control sublayer
33. Header of a frame generally contains
Correct : D. all of the mentioned
34. Automatic repeat request error management mechanism is provided by
Correct : A. logical link control sublayer
35. When 2 or more bits in a data unit has been changed during the transmission, the error is called
Correct : B. burst error
36. CRC stands for
Correct : A. cyclic redundancy check
37. Which one of the following is a data link protocol?
Correct : D. all of the mentioned
38. Which one of the following is the multiple access protocol for channel access control?
Correct : C. both (a) and (b)
39. The technique of temporarily delaying outgoing outgoing acknowledgements so that they can be hooked onto the next outgoing data frame is called
Correct : A. piggybacking
40. The network layer concerns with
Correct : C. packets
41. Which one of the following is not a function of network layer?
Correct : D. none of the mentioned
42. The 4 byte IP address consists of
Correct : C. both (a) and (b)
43. In virtual circuit network each packet contains
Correct : B. a short vc number
44. Which one of the following routing algorithm can be used for network layer design?
Correct : D. all of the mentioned
45. Multidestination routing
Correct : C. data is not sent by packets
46. A subset of a network that includes all the routers but contains no loops is called
Correct : A. spanning tree
47. Which one of the following algorithm is not used for congestion control?
Correct : D. none of the mentioned
48. The network layer protocol of internet is
Correct : B. internet protocol
49. ICMP is primarily used for
Correct : A. error and diagnostic functions
50. Transport layer aggregates data from different applications into a single stream before passing it to
Correct : A. network layer
51. Which one of the following is a transport layer protocol used in internet?
Correct : C. both (a) and (b)
52. User datagram protocol is called connectionless because
Correct : A. all udp packets are treated independently by transport layer
53. Transmission control protocol is
Correct : D. all of the mentioned
54. An endpoint of an inter-process communication flow across a computer network is called
Correct : A. socket
55. Socket-style API for windows is called
Correct : B. winsock
56. Which one of the following is a version of UDP with congestion control?
Correct : A. datagram congestion control protocol
57. A _____ is a TCP name for a transport service access point.
Correct : A. port
58. Transport layer protocols deals with
Correct : B. process to process communication
59. The ____ translates internet domain and host names to IP address.
Correct : A. domain name system
60. Teredo is an automatic tunneling technique. In each client the obfuscated IPv4 address is represented by bits
Correct : A. 96 to 127
61. Which one of the following allows a user at one site to establish a connection to another site and then pass keystrokes from local host to remote host?
Correct : C. telnet
62. Application layer protocol defines
Correct : D. all of the mentioned
63. Which one of the following protocol delivers/stores mail to reciever server?
Correct : A. simple mail transfer protocol
64. The ASCII encoding of binary data is called
Correct : A. base 64 encoding
65. Which one of the following is an internet standard protocol for managing devices on IP network?
Correct : B. simple newtwork management protocol
66. Which one of the following is not an application layer protocol?
Correct : C. resource reservation protocol
67. Which protocol is a signalling communication protocol used for controlling multimedia communication sessions?
Correct : A. session initiation protocol
68. Which one of the following is not correct?
Correct : C. both (a) and (b)
69. When displaying a web page, the application layer uses the
Correct : A. http protocol
70. The entire hostname has a maximum of
Correct : A. 255 characters
71. A DNS client is called
Correct : B. dns resolver
72. Servers handle requests for other domains
Correct : B. by contacting remote dns server
73. DNS database contains
Correct : D. all of the mentioned
74. If a server has no clue about where to find the address for a hostname then
Correct : A. server asks to the root server
75. Which one of the following allows client to update their DNS entry as their IP address change?
Correct : A. dynamic dns
76. Wildcard domain names start with label
Correct : B. *
77. The right to use a domain name is delegated by domain name registers which are accredited by
Correct : D. internet corporation for assigned names and numbers
78. The domain name system is maintained by
Correct : A. distributed database system
79. Which one of the following is not true?
Correct : C. a single hostname may correspond to a single ip address
80. Telnet protocol is used to establish a connection to
Correct : C. tcp port number 23
81. Which one of the following is not true?
Correct : D. none of the mentioned
82. All telnet operations are sent as
Correct : B. 8 bytes
83. AbsoluteTelnet is a telnet client for
Correct : A. windows
84. The decimal code of interpret as command (IAC) character is
Correct : D. 255
85. In character mode operation of telnet implementation
Correct : A. each character typed is sent by the client to the server
86. Which one of the following is not correct?
Correct : C. telnet can also be used for file transfer
87. Which operating mode of telnet is full duplex?
Correct : C. line mode
88. If we want that a character be interpreted by the client instead of server
Correct : A. escape character has to be used
89. Dynamic web page
Correct : B. generates on demand by a program or a request from browser
90. What is a web browser?
Correct : D. all of the mentioned
91. Common gateway interface is used to
Correct : A. generate executable files from web content by web server
92. URL stands for
Correct : C. uniform resource locator
93. A web cookie is a small piece of data
Correct : A. sent from a website and stored in user’s web browser while a user is browsing a website
94. Which one of the following is not used to generate dynamic web pages?
Correct : D. none of the mentioned
95. An alternative of javascript on windows platform is
Correct : A. vbscript
96. What is document object model (DOM)?
Correct : A. convention for representing and interacting with objects in html documents
97. AJAX stands for
Correct : A. asynchronous javascript and xml
98. Multiple object can be sent over a TCP connection between client and server in