GATE | GATE-CS-2003 | Question 27
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
Explanation: See following liens from http://en.wikipedia.org/wiki/Source_routing
In computer networking, source routing allows a sender of a packet to partially or completely specify the route the packet takes through the network.
In the Internet Protocol, two header options are available which are rarely used: “strict source and record route” (SSRR) and “loose source and record route” (LSRR). Because of security concerns, packets marked LSRR are frequently blocked on the Internet. If not blocked, LSRR can allow an attacker to spoof its address but still successfully receive response packets.
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