What is the purpose of DHCP in a network?

The purpose of DHCP, or Dynamic Host Configuration Protocol, in a network is primarily to automatically assign IP addresses to devices connected to that network. This process simplifies the management of IP addresses, eliminating the need for manual configuration for each device. When a device joins the network, it sends out a request for an IP address, and the DHCP server responds by providing an available IP address along with other necessary network settings, such as the subnet mask and default gateway.

This automation streamlines the process of connecting devices to a network and helps ensure that there are no conflicting IP addresses assigned to multiple devices. By centralizing IP address management, DHCP also makes it easier to accommodate changes in network size, such as adding or removing devices, without significant administrative overhead.

The other options do not represent the role of DHCP. While protecting the network from intrusions, connecting network segments, and encrypting network traffic are all essential aspects of network management and security, they are functions fulfilled by different protocols and technologies, not by DHCP.