Question 1130
A Cisco extended IPv4 ACL must permit IPv4 packets from EVERY source in subnet 10.166.92.0/22 to any destination, and no sources outside that subnet. Which IOS ACE uses the correct wildcard for this network?
Explanation
Correct Answer
ACL wildcard 0.0.3.255 is the inverse of subnet mask 255.255.252.0; the ACE access-list 110 permit ip 10.166.92.0 0.0.3.255 any matches the requested source subnet exactly.
Incorrect Answers
That ACE uses a wildcard with a different number of ignored address bits, so its source range does not equal the required subnet.
That explanation does not distinguish this option. “access-list 110 permit ip 10.166.92.0 0.0.255.255 any” is an alternative action, but it does not by itself establish the outcome required in this case.
That explanation does not distinguish this option. “access-list 110 permit ip 10.166.92.0 0.0.0.7 any” is an alternative action, but it does not by itself establish the outcome required in this case.