ACL Debugging Quiz

Quiz covering Security Troubleshooting

Questions in this quiz

A preview of the 5 questions covered. Start the quiz above to answer them, check your score, and read the explanations.

1. 1

   When an Access Control List (ACL) is applied to an interface, what is the default behavior for traffic that does not match any defined permit or deny statements?

2. 2

   You are troubleshooting a connectivity issue where users in the 192.168.10.0/24 subnet cannot access the server at 10.1.1.50. You see an ACL entry: 'deny ip 192.168.10.0 0.0.0.255 host 10.1.1.50'. What is the most effective way to allow this specific traffic while maintaining security?

3. 3

   Which command is most useful for verifying which specific ACL line is dropping packets in real-time on a Cisco router?

4. 4

   You have an Extended ACL applied to an interface. You notice that traffic is being blocked, but 'show access-lists' shows zero matches for your permit statements. What is the most likely cause?

5. 5

   Consider an ACL with the following sequence: 10 permit ip 10.1.1.0 0.0.0.255 any, 20 deny ip 10.1.1.5 0.0.0.0 any. How will a packet originating from 10.1.1.5 be handled?