Which protocol operates over UDP and utilizes port 67?

Dynamic Host Configuration Protocol (DHCP) operates over UDP and uses port 67 for communication. This protocol is essential in network environments, as it automatically assigns IP addresses and other configuration settings to devices on a network. When a client device attempts to join a network, it sends a broadcast request to find a DHCP server, which listens for these requests on port 67. The server then responds, providing the client with the necessary network configuration data.

Understanding the function of DHCP is crucial for managing IP address distribution efficiently, particularly in environments with many devices that frequently connect and disconnect from the network. This dynamic assignment helps prevent IP address conflicts and reduces the administrative overhead involved in manually configuring IP addresses for each device. In contrast, other protocols listed do not utilize port 67 or do not operate over UDP in the context cited.