Which actions can be performed on extended ACLs and ACL6s?

• A. Remove, Enable, Disable, Apply
• B. Modify, Apply, Disable, Enable
• C. Apply, Remove, Disable, Enable
• D. Modify, Apply, Disable, Enable, Remove, and Renumber

Answer: (D)

Extended ACLs and IPv6 ACLs support a full set of management actions that reflect how you administer access control in practice. You can modify existing entries to refine or expand filtering without recreating the ACL from scratch—changing permits, denials, addresses, ports, or protocols as needed. Applying the ACL is how you actually enforce the rules on a specific interface or in a specific policy, so this step is essential to make the rules take effect. Being able to disable or enable the ACL lets you suspend or resume enforcement quickly without deleting the ACL itself, which is handy for maintenance or testing. You can remove the ACL entirely when it’s no longer required. Renumbering the ACL allows you to adjust the sequence numbers or the administrative numbering of the entries, which helps keep the list organized and consistent with policy guidelines or naming conventions.

This combination covers all the practical ways administrators work with extended and IPv6 ACLs, making it the most complete and correct set of actions. The other options miss one or more of these capabilities, such as omitting renumbering or modification, and don’t reflect the full lifecycle of ACL management.