A network administrator executes the command clear ip route. Which two tables does this
command clear and rebuild? (Choose two.)
A.
IP routing
B.
FIB
C.
ARP cache
D.
MAC address table
E.
Cisco Express Forwarding table
F.
topology table
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The command “clear ip route” clears one or more routes from both the unicast RIB (IP routing table) and all the module Forwarding Information Bases (FIBs).
The Forwarding Information Base (FIB) table – CEF uses a FIB to make IP destination prefix-based switching decisions. The FIB is conceptually similar to a routing table or information base. It maintains a mirror image of the forwarding information contained in the IP routing table. When routing or topology changes occur in the network, the IP routing table is updated, and these changes are reflected in the FIB. The FIB maintains next-hop address information based on the information in the IP routing table.
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