What action does the router take?

Refer to the exhibit.

A packet with a source IP address of 192.168.2.4 and a destination IP address of 10.1.1.4 arrives at the AcmeB router.

What action does the router take?
A . forwards the received packet out the Serial0/0 interface
B . forwards a packet containing an EIGRP advertisement out the Serial0/1 interface
C . forwards a packet containing an ICMP message out the FastEthemet0/0 interface
D . forwards a packet containing an ARP request out the FastEthemet0/1 interface

Answer: C

Explanation:

CCNA – EIGRP Common Question

http://www.orbitco-ccna-pastquestions.com/CCNA—EIGRP-Common-Question.php

Looking at the output above, there is no IP route for 10.1.1.4 address on AcmeB routing table. If the router can no find a specific path in its routing table to a particular route,( In this case no path is found so AcmeB) the router will inform the source host with an ICMP message that the destination is unreachable and this will be through the same interface it has received the packet (interface Fa0/0 network 192.168.3.0/28 from the exhibit).