A newly connected host workstation requires an IPv4 address assignment. Place the steps of the standard DHCP address allocation and validation sequence in the correct chronological order from beginning to end.
- 1The host broadcasts a DHCPDISCOVER message using as the source IP address to locate available DHCP servers.
- 2A DHCP server transmits a DHCPOFFER message providing an available IPv4 address, subnet mask, default gateway, and lease duration.
- 3The host broadcasts a DHCPREQUEST message specifying the chosen server's offer to accept the lease and release other potential offers.
- 4The DHCP server returns a DHCPACK message committing the lease parameters to the IP address binding table.
- 5The host issues a Gratuitous ARP request on the local segment for the offered IPv4 address to ensure no IP address conflict exists.
Answer
The correct sequence is: 1) Host broadcasts DHCPDISCOVER, 2) Server transmits DHCPOFFER, 3) Host broadcasts DHCPREQUEST, 4) Server returns DHCPACK, 5) Host issues Gratuitous ARP for duplicate IP detection.
The DHCP lease process follows the classic DORA sequence (Discover, Offer, Request, Acknowledge). First, the client broadcasts a DHCPDISCOVER message. The server responds with a DHCPOFFER message containing network configuration details. Next, the client broadcasts a DHCPREQUEST message to accept the offer. The server completes the sequence by sending a DHCPACK message. Finally, before binding the address to its logical interface, the host broadcasts a Gratuitous ARP to perform duplicate address detection on the local link segment.
Step-by-Step Solution
Key Concept
DHCP DORA Process and Duplicate Address Detection (DAD)