Which protocol is used to automatically assign IP addresses to devices on a…

The correct answer is DHCP (Dynamic Host Configuration Protocol). DHCP is specifically designed to automatically assign IP addresses and other network configuration parameters, such as subnet masks and default gateways, to devices on a network. When a device connects, it broadcasts a request for an IP address, and the DHCP server responds with available configuration details. This automation eliminates the need for manual IP assignment, reducing errors and administrative overhead.\nDNS (Domain Name System) resolves domain names to IP addresses but does not assign them. ARP (Address Resolution Protocol) maps known IP addresses to physical MAC addresses within a local network, rather than assigning new IPs. RARP (Reverse ARP) is an older protocol that allows a device to discover its own IP address from its MAC address, but it is largely obsolete and not used for automatic assignment in modern networks. Therefore, DHCP is the standard protocol for this purpose.