Which command would you use to display the route cache?

The command used to display the route cache is "diagnose ip rtcache list." This command provides detailed information about the routes that are currently cached on the device, including the details of active routes that the firewall uses to make forwarding decisions.

Using this command essentially allows network administrators to troubleshoot or analyze routing behavior by providing insights into cached routes. This can be particularly useful for understanding how packets are being routed and determining if there are any issues with routing paths, especially in environments where route changes might frequently occur.

In contrast, other options might suggest similar actions but do not yield the relevant route cache information or might not be valid commands used in FortiGate devices, which are commonly referenced in NSE7 exams.