Which term refers to a table listing MAC addresses learned on interfaces with their corresponding IPs?

Which term refers to a table listing MAC addresses learned on interfaces with their corresponding IPs?

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

Answer: (A)

The concept here is how devices learn which MAC address goes with which IP address on a local network. This mapping is stored in the ARP table (often called the ARP cache). When a device needs to send a frame to an IP on the same LAN, it uses ARP to resolve that IP to a MAC address, and the result is kept in this table for quick lookups on subsequent frames. The ARP protocol handles the discovery by broadcasting a request and receiving a reply, and entries in the ARP table can time out and be refreshed as devices come and go. The other options don’t fit the description: ARP is the protocol used to learn mappings, not the table itself; IP Addressing is about the numerical addresses, not the MAC-to-IP mapping; a Switch Chip is hardware implementing switching functions, not the IP-to-MAC mapping table.

The concept here is how devices learn which MAC address goes with which IP address on a local network. This mapping is stored in the ARP table (often called the ARP cache). When a device needs to send a frame to an IP on the same LAN, it uses ARP to resolve that IP to a MAC address, and the result is kept in this table for quick lookups on subsequent frames. The ARP protocol handles the discovery by broadcasting a request and receiving a reply, and entries in the ARP table can time out and be refreshed as devices come and go.

The other options don’t fit the description: ARP is the protocol used to learn mappings, not the table itself; IP Addressing is about the numerical addresses, not the MAC-to-IP mapping; a Switch Chip is hardware implementing switching functions, not the IP-to-MAC mapping table.