Verify Interfaces Affected by ACL

C

The correct answer for the question is D. show ip access-lists.

Access Control Lists (ACLs) are used to filter traffic on Cisco routers. When troubleshooting ACL issues, it is important to determine which interfaces are affected by the ACL. Here's how each command can help you troubleshoot ACL issues:

A. show access-lists - This command displays all access lists configured on the router. However, it doesn't provide information on which interfaces are affected by the ACL.

B. show interface - This command displays the status of all interfaces on the router. However, it doesn't provide information on which interfaces are affected by the ACL.

C. show ip interface - This command displays detailed information about the IP configuration of all interfaces on the router, including the access control lists that are applied to inbound and outbound traffic on each interface. However, it doesn't provide a summary of which interfaces are affected by the ACL.

D. show ip access-lists - This command displays information about the ACLs configured on the router, including which interfaces are affected by each ACL. This command provides a summary of which interfaces are affected by the ACL, which can help in troubleshooting the issue.

E. list ip interface - This command is not a valid command on a Cisco router.

Therefore, the most appropriate command for troubleshooting an ACL issue on a router to verify which interfaces are affected by the ACL is D. show ip access-lists.