Cisco Certified Network Professional Practice Test 2026 – Your All-in-One Guide to Exam Success!

The indication that a router has successfully processed a packet for a destination within its route table is characterized by the forwarding of the packet to the next destination. When a router receives a packet, it examines its destination IP address and consults its routing table to determine the next hop for that packet. Upon finding a valid entry, the router encapsulates the packet in a new frame and sends it to the appropriate forward interface, effectively routing the packet toward its intended destination.

This action of forwarding signifies not only that the router has identified an appropriate path based on the routing table but also that it has processed the packet correctly, meaning it is actively working to deliver the packet through the network.

In contrast, the sending of an ICMP message to the sender is typically used for error reporting or diagnostic purposes, not solely as an indication of successful routing. Logging packet details may serve administrative and diagnostic functions but does not directly correlate with the successful processing or delivery of packets. Decreasing the TTL (Time to Live) is a mechanism to prevent packets from circulating indefinitely in a network and does occur as packets are forwarded, but it alone does not indicate successful processing of a packet for its destination.