Which item shows learned MAC-to-IP mappings on interfaces?

Which item shows learned MAC-to-IP mappings on interfaces?

• A. ARP Table
• B. ARP
• C. IP Addressing
• D. Switch Chip

Answer: (A)

ARP translates IP addresses to MAC addresses on a local network, and the ARP table (or ARP cache) holds the learned IP-to-MAC mappings for each interface. When a device needs to send a frame to another device on the same LAN, it resolves the target IP to a MAC via ARP and stores that pairing in this table for quick reuse. That’s why the ARP table is the right answer here: it is the record of which IPs have been associated with which MAC addresses on the interfaces. The other options don’t serve as the place that shows these dynamic mappings—ARP is the mechanism, IP addressing is about assigning addresses, and a switch chip is hardware that forwards frames rather than storing per-interface address mappings.

ARP translates IP addresses to MAC addresses on a local network, and the ARP table (or ARP cache) holds the learned IP-to-MAC mappings for each interface. When a device needs to send a frame to another device on the same LAN, it resolves the target IP to a MAC via ARP and stores that pairing in this table for quick reuse. That’s why the ARP table is the right answer here: it is the record of which IPs have been associated with which MAC addresses on the interfaces. The other options don’t serve as the place that shows these dynamic mappings—ARP is the mechanism, IP addressing is about assigning addresses, and a switch chip is hardware that forwards frames rather than storing per-interface address mappings.