Refer to the exhibit.

RTA is configured with a basic configuration. The link between the two routers is operational and no
routing protocols are configured on either router. The line shown in the exhibit is then added to
router RT

A.
Should interface Fa0/0 on router RTB shut down, what effect will the shutdown have on router
RTA?
A route to 172.16.14.0/24 will remain in the RTA routing table.

A.
Should interface Fa0/0 on router RTB shut down, what effect will the shutdown have on router
RTA?
A route to 172.16.14.0/24 will remain in the RTA routing table.

B.
A packet to host 172.16.14.225 will be dropped by router RTA.

C.
Router RTA will send an ICMP packet to attempt to verify the route.

D.
Because router RTB will send a poison reverse packet to router RTA, RTA will remove the route.

Explanation:
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800ef7b2.shtml