Which DHCP message initiates the address assignment process from a client to the server?

Which DHCP message initiates the address assignment process from a client to the server?

• A. DHCPDISCOVER
• B. DHCPOFFER
• C. DHCPREQUEST
• D. DHCPACK

Answer: (A)

When a client has no IP address yet, it first broadcasts a DHCPDISCOVER message to locate available DHCP servers. This initial discovery is what starts the entire address assignment process because the client doesn’t know where a server is or what addresses are available. The server(s) respond with DHCPOFFER, proposing an IP for the client. The client then chooses one offer and sends DHCPREQUEST to indicate its intent to lease that IP from a specific server. Finally, the server confirms with DHCPACK, finalizing the lease and providing the network configuration. The other messages play later roles: DHCPOFFER is the server’s proposal, DHCPREQUEST is the client’s agreement to a chosen offer, and DHCPACK confirms the assignment.

When a client has no IP address yet, it first broadcasts a DHCPDISCOVER message to locate available DHCP servers. This initial discovery is what starts the entire address assignment process because the client doesn’t know where a server is or what addresses are available. The server(s) respond with DHCPOFFER, proposing an IP for the client. The client then chooses one offer and sends DHCPREQUEST to indicate its intent to lease that IP from a specific server. Finally, the server confirms with DHCPACK, finalizing the lease and providing the network configuration. The other messages play later roles: DHCPOFFER is the server’s proposal, DHCPREQUEST is the client’s agreement to a chosen offer, and DHCPACK confirms the assignment.