ICND2: Interconnecting Cisco Networking Devices Part 2 (legacy) — Question 110

When troubleshooting Ethernet connectivity issues how can you verify that an ip address is known to a router?

Answer options

• A. Check Whether the ip address is in the routing table
• B. Check Whether an ACL is blocking the ip address
• C. Check Whether the ip address is in the CAM Table
• D. Check Whether the ip address is in the ARP Table

Correct answer: D

Explanation

The correct answer is D because the ARP Table is used to map IP addresses to MAC addresses, confirming that the router has acknowledged the IP address. Option A is incorrect as the routing table indicates the paths to reach networks but not individual IP address recognition. Options B and C are also incorrect as they involve access control and MAC address mapping respectively, which do not directly verify IP address recognition by the router.