Which configuration restores service and continues to block 10.1.1.100/32?

Refer to the exhibit.

A junior engineer updated a branch router configuration. Immediately after the change, the engineer receives calls from the help desk that branch personnel cannot reach any network destinations.

Which configuration restores service and continues to block 10.1.1.100/32?
A . ip prefix-list 102 seq 15 permit 0.0.0.0/32 le 32
B . route-map FILTER-IN permit 20
C . ip prefix-list 102 seq 5 permit 0.0.0.0/32 le 32
D . route-map FILTER-IN deny 5

Answer: B

Explanation

By using “deny” keyword in a route-map, we can filter out the prefix specified in the prefix-list. But there is an implicit “deny all” statement in the prefix-list so we must permit other prefixes with “permit” keyword in the route-map.