Quick Answer

The correct order for DHCP snooping binding table population begins with validating DHCP server messages on trusted ports, followed by creating a binding entry from the DHCPACK, storing the entry with MAC/IP/port/VLAN details, updating the table on lease renewal, and finally deleting the entry on DHCPRELEASE or lease expiry. This sequence is correct because DHCP snooping acts as a security feature that builds a dynamic binding database only from legitimate DHCP server responses received on trusted interfaces, ensuring that rogue DHCP servers cannot poison the table. On the ENCOR 350-401 exam, this drag-and-drop task tests your understanding of the snooping state machine and the lifecycle of a binding entry, with a common trap being the placement of the deletion step—many mistakenly place it before renewal, but the entry must be updated before it can be removed. A helpful memory tip is to think of the process as a four-step cycle: Validate, Create, Store, Update, then Delete—or simply “VCSUD” (pronounced “vic-sud”) to recall the order from first to last.