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2021 Latest pass4itsure 350-401 PDF and VCE dumps Download
QUESTION 1
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.
Correct Answer: A
QUESTION 2
Which statement about Cisco Express Forwarding is true?
A. It uses a fast cache that is maintained in a router data plane.
B. maintains two tables in the data plane the FIB and adjacency table.
C. It makes forwarding decisions by a process that is scheduled through the IOS scheduler.
D. The CPU of a router becomes directly involved with packet-switching decisions.
Correct Answer: B
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. 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: The adjacency table is tasked with maintaining the layer 2 next-
hop information for the FIB. An example of the adjacency table is shown below:
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