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The function of ARP (address resolution protocol) is to obtain the MAC address of a host, and then map that MAC address to the host's IP address.

This protocol is used to translate physical addresses to internet protocol (IP) addresses.

A physical address can be the MAC (Media Access Control) address of a network card inside of a computer.

The information about which hardware address is associated with which IP address is usually stored in a table on each computer, the so-called ARP table.

In essence, ARP is used so that machines on the same network can find each other. It facilitates data exchange between computers on the same network.

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10y ago

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