ITPEC FE Morning October 2022 Question 31

Source exam: ITPEC FE Morning October 2022Topic: Networks

ITPEC FE Morning October 2022 — Question 31 of 80

ARP (Address Resolution Protocol) — resolves an IP address to a MAC address on a local network.

ARP sends a broadcast asking "Who has this IP?" and the owner replies with its MAC address.

  • •ARP — IP → MAC (the correct answer)
  • •RARP — MAC → IP (reverse direction)
  • •ICMP — diagnostics protocol (ping, traceroute), not related to MAC resolution
  • •IP — network-layer routing protocol, does not resolve MAC addresses

Key rule: ARP = IP → MAC, RARP = MAC → IP.

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