Discussion
What protocol is used to find the hardware address of a local device?
Answer: B
Correct answer: ARP
ARP resolves a known IP address to the hardware address on the local segment, by broadcasting a request that every host sees and only the owner answers. RARP does the reverse, obtaining an IP address from a known hardware address, and ICMP reports errors rather than resolving anything. The result is held in the ARP cache, which show ip arp displays.
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