What protocol is used to map an IP address to a MAC address?1.0 MarksARPDHCPICMP

Answer

The protocol used to map an IP address to a MAC address is ARP, which stands for Address Resolution Protocol.

Explanation

1. ARP (Address Resolution Protocol): ARP is a network protocol used to find the hardware address (MAC address) of a host from its IP address. When a device wants to communicate with another device on a local network using its IP address, it broadcasts an ARP request on the network to ask, "Who has this IP address?" The device that has that IP address responds with its MAC address.

2. DHCP (Dynamic Host Configuration Protocol): While DHCP is used for dynamically assigning IP addresses to devices on a network, it does not perform the mapping of IP addresses to MAC addresses. Instead, it assigns IP addresses to clients based on their MAC addresses.

3. ICMP (Internet Control Message Protocol): ICMP is mainly used for error messages and operational information related to IP processing but is not involved in mapping IP addresses to MAC addresses.

Thus, the correct answer is ARP.