Which statement about Cisco Express Forwarding is true?
A. The CPU of a router becomes directly involved with packet switching decisions.
B. It uses a fast cache that is maintained in a router data plane.
C. It maintains two tables in the data plane: the FIB and adjacency table.
D. It makes forwarding decisions by a process that is scheduled through the IOS scheduler.
Answer:C
Which statement about Cisco Express Forwarding is true?
A. The CPU of a router becomes directly involved with packet switching decisions. B. It uses a fast cache that is maintained in a router data plane. C. It maintains two tables in the data plane: the FIB and adjacency table. D. It makes forwarding decisions by a process that is scheduled through the IOS scheduler.
Explanation: Cisco Express Forwarding (CEF) provides the ability to switch packets through a device in a very quick and efficient way while also keeping the load on the router’s processor low. CEF is made up of two different main components: the Forwarding Information Base (FIB) and the Adjacency Table. These are automatically updated at the same time as the routing table.