Final answer:
DHCP is a protocol used to dynamically assign IP addresses to devices on a network. It supports both IPv4 and IPv6, known as DHCPv6 for the latter.
Step-by-step explanation:
DHCP, which stands for Dynamic Host Configuration Protocol, is a network management protocol used to automatically assign IP addresses and other network configuration parameters to devices on a network, so they can communicate with other IP networks. It simplifies the process of configuring devices on the network and management of IP addresses. While older implementations of DHCP were primarily designed for IPv4, modern DHCP servers and clients can also support IPv6, known as DHCPv6. So, the correct answer to whether DHCP is used for IPv4, IPv6, both, or none is that it is used for both IPv4 and IPv6.