Refer to the exhibit.

The routing table in the exhibit shows two default routes (0.0.0.0/0) with different administrative distances:

The default route throughport2has an administrative distance of 20.

The default route throughport1has an administrative distance of 10.

Administrative distance determines the priority of the route; a lower value is preferred. Here, the route throughport1with an administrative distance of 10 is the preferred route. The route throughport2with an administrative distance of 20 acts as a standby or backup route. If the primary route (port1) fails or is unavailable, traffic will then be routed throughport2.

Regarding the statement that the port2 interface is marked as inactive, there is no indication in the routing table thatport2is inactive. Similarly, all the routes displayed are not necessarily installed in the FortiGate routing table, as the table could include both active and backup routes.

References:

FortiOS 7.4.1 Administration Guide: Default route configuration

FortiOS 7.4.1 Administration Guide: Routing table explanation