How does the RIB differ from the FIB?

How does the RIB differ from the FIB?
A . The RIB is used to create network topologies and routing tables. The FIB is a list of routes to particular network destinations.
B . The FIB includes many routes a single destination. The RIB is the best route to a single destination.
C . The RIB includes many routes to the same destination prefix. The FIB contains only the best route
D . The FIB maintains network topologies and routing tables. The RIB is a Iist of routes to particular
network destinations.

View Answer

Answer: C

Explanation:

The Routing Information Base (RIB) is a data table stored in a router or a networked computer that lists the routes to particular network destinations, and in some cases, metrics (distances) associated with those routes. The RIB contains all the routes learned via static configuration or dynamic routing protocols, such as BGP, OSPF, etc. On the other hand, the Forwarding Information Base (FIB) is used by the router to make forwarding decisions and contains only the best route to each destination prefix, which has been selected by the routing protocol algorithms from the RIB. The FIB is optimized for fast lookup to expedite the forwarding process23.

References:

“RIB vs FIB differences?” from Network Engineering Stack Exchange2.

“What is the difference between the RIB and FIB?” from Cisco Learning Network