8月8日的220题和8月8日精简的190题都一样,一个选了 A 一个选了D,应该哪个正确。
QUESTION 202
When unicast reverse path forwarding is configured on an interface, which action does the interface take first when it receives a packet?
A. It check the ingress access list
B. It check the egress access list
C. It verifies that the source has a valid CEF adjacency
D. It verifies a reverse path via the FIB to the source