Chapter 8

1:	How many types of packet are there in OSPF?
A1:	OSPF has five types of packets.
2:	Which of the LSAs has a field called Forwarding Address?
A2:	External LSAs have a Forwarding Address field.
3:	Which of the LSA(s) are not allowed in a totally stubby area?
A3:	External and summary LSAs are not allowed in a totally stubby area.
4:	What is the multicast address for AllSPFRouters?
A4:	224.0.0.5 is the multicast address.
5:	Which of the OSPF protocol packets is used to elect a master and a slave?
A5:	Type 2 DBD packets are used to elect a master and a slave.
6:	Which of the OSPF protocol packets implement flooding of the LSA?
A6:	Link-state update packets implement flooding of the LSA.
7:	What is the time limit in seconds before an LSA is declared as MAXAGED?
A7:	The limit is 3600 seconds.
8:	How many bytes long is a common LSA header?
A8:	A common LSA header is 20 bytes long.