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GATE | GATE-CS-2015 (Mock Test) | Question 17

  • Last Updated : 11 Oct, 2019

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 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 router whose entry matches with the longest suffix of incoming packet


Answer: (A)

Explanation: The network addresses of different entries may overlap in forwarding table. Routers forward the incoming packet to the router which hash the longest prefix matching with the incoming packet.

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