Which router command allows you to view the entire contents of all access lists?

The command that allows you to view the entire contents of all access lists is "show access-lists." This command provides a complete display of all defined access control lists (ACLs) on a router, making it easier for network administrators to manage and troubleshoot network security and traffic filtering settings.

When using this command, you can see the rules defined in each access list, including the criteria for allowing or denying traffic, as well as the specific interfaces they are applied to. This information is crucial for understanding how traffic is being filtered on the router and for making any necessary adjustments to the access lists.

In contrast, other commands listed do not provide this specific information. For example, "show all access-lists" is not a recognized command in standard router syntax, which might lead to confusion or errors. The commands "show ip interface" and "show interface" focus on interfaces and their operational status rather than the access lists themselves, thus not serving the purpose of displaying access list content.