Question

What is the priority for an exterior gateway routing protocol?

		Hops
		Bandwidth
		Delay
		Policy

Answer 1

Correct Answer is Policy

Explanation:

A gateway using exterior gateway protocol provide information about whether it can reach networks that are part of its autonomus system. Exterior gateway protocols are policy-based routing protocols which uses non-techincal reasons like political,organization or security reasons to make routing decisions. Thus an exterior gateway protocol does not attempt to choose "the best " route in terms of hops, bandwidth, delay or anything technical. Instead it chooses based on the policy described.

Now coming to options,

Hops, Bandwidth and Delay are the metrics which attempts to choose the best paths, but for an exterior gateway routing protocol we know it routes based on the policy rather than choosing the best paths. Hence policy is the correct option.