Multiple choice

Which of the following protocols would a technician use to reveal a MAC address if the IP address is known?

  1. RARP

  2. ARP

  3. ICMP

  4. Boot P
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

ARP is used to find a MAC address. Because the routers build new MAC headers and trailers, and because the new headers contain MAC addresses, the routers must have some way to decide what MAC addresses to use. An example of how the router determines which MAC address to use is the IP Address Resolution Protocol (ARP) protocol. ARP is used to dynamically learn the MAC address of some IP host.

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