Final answer:
When a router interface is activated with an IP address, a directly connected route is automatically created. It shows that the router has a direct connection to the network segment on that interface, which is auto-added to the routing table.
Step-by-step explanation:
When a router interface is activated and configured with an IP address, the route that would be automatically created is a directly connected route. This type of route indicates that the router has a direct physical or logical connection to the network segment defined by the IP address and subnet mask assigned to the interface. Directly connected routes have the benefit of not requiring any additional configuration and are automatically added to the routing table when the interface becomes active and operational.