| 51. | Which of the following assertions is FALSE about the Internet Protocol (IP) ? |
| a. | It is possible for a computer to have multiple IP addresses |
| b. | IP packets from the same source to the same destination can take different routes in the network |
| c. | IP ensures that a packet is discarded if it is unable to reach its destination within a given number of hops |
| d. | The packet source cannot set the route of an outgoing packets; the route is determined only by the routing tables in the routers on the way |
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Answer: (d).The packet source cannot set the route of an outgoing packets; the route is determined only by the routing tables in the routers on the way
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| 52. | Routers forward a packet using forwarding table entries. The network address of incoming packet may match multiple entries. How routers resolve this? |
| a. | Forward it the the router whose entry matches with the longest prefix of incoming packet |
| b. | Forward the packet to all routers whose network addresses match |
| c. | Discard the packet |
| d. | Forward it the the router whose entry matches with the longest suffix of incoming packet |
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Answer: (a).Forward it the the router whose entry matches with the longest prefix of incoming packet
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| 53. | Which one of the following fields of an IP header is NOT modified by a typical IP router? |
| a. | Checksum |
| b. | Source address |
| c. | Time to Live (TTL) |
| d. | Length |
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Answer: (b).Source address
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| 54. | In the network 200.10.11.144/27, the fourth octet (in decimal) of the last IP address of the network which can be assigned to a host is ________. |
| a. | 158 |
| b. | 255 |
| c. | 222 |
| d. | 223 |
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Answer: (a).158
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| 55. | If a Company require 60 hosts then What is the best possible subnet mask? |
| a. | 255.255.255.0 |
| b. | 255.255.255.192 |
| c. | 255.255.225.224 |
| d. | 225.225.255.240 |
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Answer: (b).255.255.255.192
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| 56. | In class C , if subnet mask is 255.255.255.224, then calculates number of subnet? |
| a. | 6 |
| b. | 8 |
| c. | 4 |
| d. | None of the Above |
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Answer: (a).6
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| 57. | A subnet has been assigned a subnet mask of 255.255.255.192. What is the maximum number of hosts that can belong to this subnet? |
| a. | 14 |
| b. | 30 |
| c. | 62 |
| d. | 126 |
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Answer: (c).62
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| 58. | A host is connected to a Department network which is part of a University network. The University network, in turn, is part of the Internet. The largest network in which the Ethernet address of the host is unique is: |
| a. | the subnet to which the host belongs |
| b. | the Department network |
| c. | the University network |
| d. | the Internet |
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Answer: (d).the Internet
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| 59. | In TCP, a unique sequence number is assigned to each |
| a. | byte |
| b. | word |
| c. | segment |
| d. | message |
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Answer: (a).byte
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| 60. | Which of the following objects can be used in expressions and scriplets in JSP (Java Server Pages) without explicitly declaring them? |
| a. | session and request only |
| b. | request and response only |
| c. | response and session only |
| d. | session, request and response |
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Answer: (d).session, request and response
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