ARP stands for –
2022
ARP stands for –
- A.
Address Routing Protocol
- B.
Address Routing Packet
- C.
Address Resolution Protocol
- D.
Address Routing Program
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Correct answer: C
The Address Resolution Protocol (ARP) is used to map a dynamic IP address (logical address) to a permanent physical machine address, known as a MAC address, in a local area network (LAN).
Why it’s needed: When a packet arrives at a local network, it knows the destination IP, but the hardware (like an Ethernet switch) needs the MAC address to deliver the data to the specific device.
How it works: The sender sends an "ARP Request" broadcast asking, "Who has this IP?" The device with that IP sends an "ARP Reply" with its MAC address.