ITPEC FE Subject A April 2025 Question 25
ITPEC FE Subject A April 2025 — Question 25 of 60
ARP (Address Resolution Protocol) — resolves an IP address to a MAC address on a local network.
ARP sends a broadcast query: "Who has this IP?" The device with that IP replies with its MAC address.
Why not others:
- (a) MAC → IP — this describes RARP (Reverse ARP), not ARP
- (b) Domain name → IP — this is DNS (Domain Name System)
- (d) IPv4 → IPv6 — this involves transition mechanisms like NAT64 or tunneling
Key rule: ARP = IP → MAC. Remember: ARP Asks for the MAC Address.
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