Which Windows command shows the ARP cache?

Which Windows command shows the ARP cache?

• A. arp -a
• B. ipconfig
• C. ip neigh
• D. netstat -r

Answer: (A)

The ARP cache stores mappings between IP addresses and MAC addresses on a local network, so a device can translate an IP to a hardware address when sending data. On Windows, you view this cache with the arp command using the -a option. This displays the ARP table for all interfaces, listing each known IP address, the corresponding MAC address (Physical Address), and whether the entry is dynamic or static. Other commands don’t show the ARP cache: ipconfig reveals IP configuration details (like IP address, subnet mask, gateway) but not ARP mappings; ip neigh is a Linux/UNIX command for neighbor discovery, not Windows; netstat -r shows the routing table, not ARP entries.

The ARP cache stores mappings between IP addresses and MAC addresses on a local network, so a device can translate an IP to a hardware address when sending data. On Windows, you view this cache with the arp command using the -a option. This displays the ARP table for all interfaces, listing each known IP address, the corresponding MAC address (Physical Address), and whether the entry is dynamic or static.

Other commands don’t show the ARP cache: ipconfig reveals IP configuration details (like IP address, subnet mask, gateway) but not ARP mappings; ip neigh is a Linux/UNIX command for neighbor discovery, not Windows; netstat -r shows the routing table, not ARP entries.