When a router makes a forwarding decision, which of these routes in the routing table always
wins?

A.
administrative distance

B.
router ID

C.
longest prefix match

D.
routing process ID

Explanation:
Making a forwarding decision actually consists of three sets of processes: the routing protocols,
the routing table, and the actual process, which makes a forwarding decision and switches
packets. These three sets of processes are illustrated, along with their relationship, below:

The longest prefix match always wins among the routes actually installed in the routing table, while
the routing protocol with the lowest administrative distance always wins when installing routes into
the routing table.