71. | An attacker sits between customer and Banker, and captures the information from the customer and retransmits to the banker by altering the information. This attack is called as .............. |
Discuss |
Answer: (b).Replay Attack
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72. | Match the following Layers and Protocols for a user browsing with SSL: a. Application layer i. TCP b. Transport layer ii. IP c. Network layer iii. PPP d. Datalink layer iv. HTTP Codes: a b c d |
Discuss |
Answer: (a).iv i ii iii
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73. | The maximum size of the data that the application layer can pass on to the TCP layer below is ......... |
Discuss |
Answer: (c).Any size
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74. | A packet whose destination is outside the local TCP/IP network segment is sent to .............. |
Discuss |
Answer: (d).Default gateway
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75. | Distance vector routing algorithm is a dynamic routing algorithm. The routing tables in distance vector routing algorithm are updated ........... |
Discuss |
Answer: (c).by exchanging information with neighbor nodes
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76. | In link state routing algorithm after the construction of link state packets, new routes are computed using: |
Discuss |
Answer: (b).Dijkstra's algorithm
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77. | Suppose there are n stations in a slotted LAN. Each station attempts to transmit with a probability P in each time slot. The probability that only one station transmits in a given slot is .................. |
Discuss |
Answer: (a).nP(1-P)^n-1
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78. | Station A uses 32 byte packets to transmit messages to station B using sliding window protocol. The round trip delay between A and B is 40 milli seconds and the bottleneck bandwidth on the path between A and B is 64 kbps. The optimal window size of A is |
Discuss |
Answer: (b).10
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79. | Let G(x) be generator polynomial used for CRC checking. The condition that should be satisfied by G(x) to correct odd numbered error bits, will be: |
Discuss |
Answer: (a).(1+x) is factor of G(x)
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80. | In a packet switching network, if the message size is 48 bytes and each packet contains a header of 3 bytes. If 24 packets are required to transmit the message, the packet size is ................ |
Discuss |
Answer: (d).5 bytes
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