When unicast reverse path forwarding is configured on an interface, which action does the interface take first when it receives a packet?
A. it verifies that the source has a valid VEF adjacency.
B. It checks the egress access lists.
C. it verifies a reverse path via the FIB to the source.
D. It checks the ingress access lists.
Answer:A
When unicast reverse path forwarding is configured on an interface, which action does the interface take first when it receives a packet?
A. it verifies that the source has a valid VEF adjacency. B. It checks the egress access lists. C. it verifies a reverse path via the FIB to the source. D. It checks the ingress access lists.