The Resolution of IP Addresses to MAC Addresses

B.

The protocol responsible for the resolution of IP addresses to MAC addresses is ARP (Address Resolution Protocol), which is a protocol used in computer networks to map a network address (such as an IP address) to a physical address (such as a MAC address).

When a device wants to send data to another device on the network, it needs to know the MAC address of the destination device. The IP address alone is not sufficient for this purpose. ARP is used to find the MAC address of a device by sending an ARP request message to all devices on the network. The device with the specified IP address will respond to the ARP request with its MAC address.

The DHCP (Dynamic Host Configuration Protocol) is used to assign IP addresses to devices on a network. It does not have any direct involvement in resolving IP addresses to MAC addresses.

The DNS (Domain Name System) is used to resolve domain names (such as www.example.com) to IP addresses. It is not involved in resolving IP addresses to MAC addresses.

RARP (Reverse Address Resolution Protocol) is an older protocol that was used to map MAC addresses to IP addresses. It is not commonly used today.

Therefore, the correct answer to the question is B. ARP.