Which of the following sequences correctly represents the DORA DHCP process?

Which of the following sequences correctly represents the DORA DHCP process?

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

Answer: (A)

DHCP leasing flow follows a four-step DORA sequence: Discover, Offer, Request, Acknowledgement. The client begins by broadcasting a DHCPDISCOVER to find any DHCP servers on the network. In response, a server sends a DHCPOFFER that includes an available IP address and other network configuration. The client then selects one of the offers and sends a DHCPREQUEST to indicate it wants to use the offered IP address. Finally, the chosen server replies with a DHCPACK to finalize the lease and provide the remaining configuration details. This order is essential because the client must first discover servers, then learn what’s offered, then formally request a specific offer, and only then be acknowledged as the lease is granted. The other sequences mix these steps in a way that would break the handshake and prevent proper lease assignment.

DHCP leasing flow follows a four-step DORA sequence: Discover, Offer, Request, Acknowledgement. The client begins by broadcasting a DHCPDISCOVER to find any DHCP servers on the network. In response, a server sends a DHCPOFFER that includes an available IP address and other network configuration. The client then selects one of the offers and sends a DHCPREQUEST to indicate it wants to use the offered IP address. Finally, the chosen server replies with a DHCPACK to finalize the lease and provide the remaining configuration details. This order is essential because the client must first discover servers, then learn what’s offered, then formally request a specific offer, and only then be acknowledged as the lease is granted. The other sequences mix these steps in a way that would break the handshake and prevent proper lease assignment.