Final answer:
DHCP is the client-server protocol used for managing unique IP addresses and assigning addresses from address pools by servers.
Step-by-step explanation:
The correct answer is D) DHCP. DHCP stands for Dynamic Host Configuration Protocol. It is a client-server protocol used for managing unique IP addresses and assigning addresses from address pools by servers. DHCP allows devices on a network to automatically obtain an IP address, subnet mask, default gateway, and other network configuration parameters.