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Exam A
QUESTION 1
A packet that needs to be forwarded arrives on an interface of a router. In order for a router to route data, what must that router determine? (Select the best answer)
A. The route age of the next-hop device
B. The subnet mask of the source network
C. The cost metric of the path of the destination
D. The outbound interface of the best path to the destination
E. All of the above
Correct Answer: D Section: (none) Explanation
Explanation/Reference:
Explanation: In order to route the data to the correct destination the router must know the outbound interface that provides the best destination. When a receives a packet that needs to be forwarded, the router determines the destination network, looks up the best path to that destination in the routing table, and then forwards the packet out the correct interface. Incorrect Answers:
A. The age of the next-hop router is not consulted before forwarding information.