What is the primary function of DHCP in a network?

The primary function of DHCP, which stands for Dynamic Host Configuration Protocol, is to assign IP addresses automatically to devices on a network. This protocol simplifies the process of connecting devices by eliminating the need for manual IP address configuration. When a device connects to a network, the DHCP server assigns it an IP address from a predefined range, known as a DHCP scope, and provides other essential network configuration parameters, such as subnet mask, default gateway, and DNS servers.

This automatic assignment helps prevent IP address conflicts and reduces the chances of human error in assigning IP addresses. Therefore, the role of DHCP is crucial for maintaining efficient and effective network management, especially in environments with numerous devices that frequently connect and disconnect from the network.

The other choices, while related to various aspects of network management, do not reflect the primary purpose of DHCP as accurately as the option regarding automatic IP address assignment. For instance, blocking unauthorized network access relates more to security protocols, monitoring network traffic pertains to performance analysis, and reconfiguring network settings involves different network management processes.