What is the last message in the DHCP DORA handshake?

What is the last message in the DHCP DORA handshake?

• A. DHCP DISCOVER
• B. DHCP OFFER
• C. DHCP REQUEST
• D. DHCP ACK

Answer: (D)

In DHCP, obtaining an IP lease uses a four-step exchange called DORA. The final step in this sequence is the server sending DHCPACK, which confirms the lease and delivers the final network configuration to the client (such as the IP address, subnet mask, gateway, and DNS servers). This acknowledgment completes the handshake, signaling that the client is now bound to the offered IP and can begin using the network. If the server can’t grant the offer, a DHCPNAK can occur instead, but under normal flow the last message is the acknowledgment.

In DHCP, obtaining an IP lease uses a four-step exchange called DORA. The final step in this sequence is the server sending DHCPACK, which confirms the lease and delivers the final network configuration to the client (such as the IP address, subnet mask, gateway, and DNS servers). This acknowledgment completes the handshake, signaling that the client is now bound to the offered IP and can begin using the network. If the server can’t grant the offer, a DHCPNAK can occur instead, but under normal flow the last message is the acknowledgment.