After you configure a default route to the Internet on a router, the route is missing from the routing table. Which option describes a possible reason for the problem?
A. The next-hop address is unreachable.
B. The default route was configured on a passive interface.
C. Dynamic routing is disabled.
D. Cisco Discovery Protocol is disabled on the interface used to reach the next hop.
A is correct
why does vce have so many wrong answers
Answer is A
Three reasons why the route might be missing from the routing table:
1. The outgoing interface listed in the ip route command is not up/up.
2. The next-hop router IP address listed in the ip route command is not reachable. <————-
3. A better competing route (another route to the exact same subnet ID and mask) exists,
and that competing route has a better administrative distance.
The next-hop address is unreachable.