David needs to implement a routing protocol that meets the following requirements: quick convergence, support VLSM, CIDR, IP, IPX, and minimal usage of bandwidth for routing updates. Which of the following protocols should he use?
Explanation
Answer: D - To fulfill all of the requirements, David should use EIGRP.
Key Takeaway: EIGRP, or the Enhanced Interior Gateway Routing Protocol, is a hybrid routing protocol that uses a distributed update algorithm. It combines the Link-state and Distance-Vector algorithms. Unlike IGRP, which only understands major network numbers, EIGRP can be configured to use subnet masks and supernet masks. The advantages of EIGRP are fast convergence, support for multiple protocols, and less bandwidth requirements than Distance-vector protocols. This is because only partial updates are broadcast-only when changes in topology are detected- not periodic broadcasts.
