A、It is a route to be used when the routing protocol fails.
B、It is a route configured by an ISP that sends traffic into a corporate network.
C、It is a route used when a packet is destined for a remote network that is not listed in the routing table.
D、It is a route manually configured for a specific remote network for which a routing protocol is not configured.
E、It is used to send traffic to a stub network.