A default route is the interface through which the router forwards:
- all packets
- any packet when a host does not receive an ARP Reply
- a packet containing a source IP network address that is not in the routing table of the router
- a packet containing a destination IP network address that is not in the routing table of the router
Explanation: If a router does not have a route to a destination network, it uses the default router.
Exam with this question: 7.2.10 Check Your Understanding – The Routing Table