What port number is utilized by DHCP?

The Dynamic Host Configuration Protocol (DHCP) utilizes two specific port numbers: 67 and 68. Port 67 is used by the DHCP server for sending responses to client requests, while port 68 is designated for the client's use when it sends requests to the server. This dual-port structure is essential because it allows the server and clients to communicate effectively within the network.

In typical DHCP operations, clients broadcast requests to discover DHCP servers on the network, and those servers reply using their designated port. This separation of ports helps maintain organized and efficient communication, ensuring that requests and responses are appropriately routed.

Other choices correspond to different protocols. Port 53 is utilized by the Domain Name System (DNS) for translating domain names into IP addresses. Port 80 is reserved for Hypertext Transfer Protocol (HTTP), which is used for web traffic. Port 110 is used by Post Office Protocol version 3 (POP3), which is a protocol for retrieving email. Understanding the specific port assignments for protocols like DHCP is crucial for troubleshooting and configuring network services effectively.