How do you create an extended ACL entry to permit or deny all traffic?

The choice that effectively creates an extended Access Control List (ACL) entry to either permit or deny all traffic is represented by the command "permit ip any any" or "deny ip any any." This command specifies that for any packet matching the IP protocol, regardless of the source or destination, the action will either be to allow or block that traffic.

The syntax "ip any any" is particularly important because it is universal, matching any source IP address and any destination IP address across all protocols. This is a fundamental command used in configuring ACLs on Cisco devices, allowing for granular control over traffic management on a network.

In contrast, the other choices do not conform to the proper syntax used for configuring ACL entries in Cisco devices. For instance, "allow all traffic" and "filter ip any any" are not valid Cisco IOS commands for managing ACLs. Additionally, "block" is not valid terminology in this context; the proper terms are "permit" and "deny." Thus, the first choice stands as the only correct method for specifying extended ACL entries that govern all traffic.