What are two differences between the RIB and the FIB? (Choose two.)

IT Questions BankCategory: CCNPWhat are two differences between the RIB and the FIB? (Choose two.)
What are two differences between the RIB and the FIB? (Choose two.) 1ITExamAnswers Staff asked 3 months ago

Question:
What are two differences between the RIB and the FIB? (Choose two.)

  • A. The FIB is derived from the data plane, and the RIB is derived from the FIB.
  • B. The RIB is a database of routing prefixes, and the FIB is the Information used to choose the egress interface for each packet.
  • C. FIB is a database of routing prefixes, and the RIB is the information used to choose the egress interface for each packet.
  • D. The FIB is derived from the control plane, and the RIB is derived from the FIB.
  • E. The RIB is derived from the control plane, and the FIB is derived from the RIB.

Explanation: The Forwarding Information Base (FIB) contains destination reachability information as well as next hop information. This information is then used by the router to make forwarding decisions. The FIB allows for very efficient and easy lookups. Below is an example of the FIB table:

What are two differences between the RIB and the FIB? (Choose two.) 2

The FIB maintains next-hop address information based on the information in the IP routing table (RIB).
Note: In order to view the Routing information base (RIB) table, use the show ip route command. To view the Forwarding Information Base (FIB), use the show ip cef command. RIB is in Control plane while FIB is in Data plane.

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