What is DHCP used for?

• A. Configuring DNS servers only
• B. Assigning IP addresses automatically.
• C. Providing internet access directly
• D. Assigning hostnames

Answer: (B)

DHCP automates the assignment of IP addresses and related network settings to devices on a network. When a device connects, it can obtain an IP address, subnet mask, default gateway, and often DNS server information from a DHCP server, all automatically. This eliminates manual configuration and helps prevent address conflicts, especially in environments where devices frequently join and leave the network.

A typical flow is: the client broadcasts a request for configuration, the server offers an IP address and settings, the client requests that assignment, and the server acknowledges with a lease. The device then uses those settings to communicate on the network and renews the lease as needed.

DNS server configuration and hostname assignment can be provided by DHCP, but the primary purpose is automatic IP address allocation. DHCP does not provide direct internet access; that comes from routing and upstream connectivity.