All network devices have an ARP table, a short-term memory of all the IP addresses and MAC addresses the device has already matched together.

所有的网络设备都有一个ARP映射表，就是内存里的一小段存储着目前该设备已经匹配的IP地址和MAC地址对。

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ARP USES a similar technique to associate an IP address to the MAC address.

ARP运用了相似的技术来将IP地址和MAC地址联系起来。

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ARP is the universal tool for matching IP addresses to MAC addresses.

ARP是把IP地址映射到MAC地址的通用工具。

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