Which of the following indicates a valid configuration for FortiGate routes?

A valid configuration for FortiGate routes requires an active outgoing interface. This is essential because the router must have a functioning path through which it can send traffic. An active outgoing interface ensures that packets can be forwarded correctly and efficiently to their destination, thus enabling successful routing decisions.

When a route is configured, the FortiGate firewall uses the outgoing interface to send traffic out of the network. If the specified interface is inactive, the route becomes unusable, as there would be no physical or logical link to transmit data. This highlights the importance of having an active interface in ensuring that traffic can flow through the network seamlessly.

Other options present scenarios that could hinder proper routing. For example, having a static link configuration is not inherently indicative of route validity as static links can still be misconfigured. An inactive health monitor would imply that the monitoring system is not checking the status of the routes, leading to potential routing issues. Lastly, a longer distance route typically indicates a less preferred route compared to a shorter distance route, but it can still be valid; however, preference affects routing decisions rather than the validity of the route itself. Thus, the presence of an active outgoing interface is the most critical factor for validating route configurations on FortiGate devices.