Default Behavior for OSPF

AC

OSPF (Open Shortest Path First) is a link-state routing protocol that is used to distribute IP routing information within a single autonomous system (AS) in a network. It allows routers to communicate with each other about the network topology to build a complete picture of the network, which helps them to select the best path for forwarding traffic.

Now let's look at each of the given statements and their explanations to determine which two are correct:

A. OSPF imports all routes into the inet.0 routing table. This statement is partially correct. OSPF does import all the routes it learns from other OSPF routers into its own routing table, but that routing table is not necessarily inet.0. The actual routing table used by OSPF is determined by the configuration of the router.

B. OSPF exports all static routes into the OSPF database. This statement is not correct. OSPF does not export static routes by default. Static routes are configured manually and are not part of the OSPF network topology. Therefore, they are not shared with other OSPF routers.

C. OSPF does not export static routes into the OSPF database. This statement is correct. As explained in the previous statement, OSPF does not export static routes into the OSPF database.

D. OSPF imports all routes into the inet4.0 routing table. This statement is not entirely correct. The routing table used by OSPF is not necessarily inet4.0. This depends on the configuration of the router.

Therefore, the two statements that correctly describe the default behavior of OSPF are:

A. OSPF imports all routes into the routing table. C. OSPF does not export static routes into the OSPF database.