Review Questions

1:	What is a routing protocol?
2:	What basic procedures should a routing algorithm perform?
3:	Why do routing protocols use metrics?
4:	What is convergence time?
5:	What is load balancing? Name four different types of load balancing.
6:	What is a distance vector routing protocol?
7:	Name several problems associated with distance vector protocols.
8:	What are neighbors?
9:	What is the purpose of route invalidation timers?
10:	Explain the difference between simple split horizon and split horizon with poisoned reverse.
11:	What is the counting-to-infinity problem, and how can it be controlled?
12:	What are holddown timers, and how do they work?
13:	What are the differences between distance vector and link state routing protocols?
14:	What is the purpose of a topological database?
15:	Explain the basic steps involved in converging a link state internetwork.
16:	Why are sequence numbers important in link state protocols?
17:	What purpose does aging serve in a link state protocol?
18:	Explain how an SPF algorithm works.
19:	How do areas benefit a link state internetwork?
20:	What is an autonomous system?
21:	What is the difference between an IGP and an EGP?