A network engineer must enable DHCP snooping on the corporate switches only for VLAN 2.

DHCP snooping requires both global activation and activation for the VLANs that must be protected. Because the global feature and the trusted uplink are already configured, ip dhcp snooping vlan 2 is the remaining command that enables inspection specifically on VLAN 2. Once active, server-originated DHCP messages received on untrusted access ports are rejected, while responses arriving on the trusted server-facing uplink are permitted and used to build the snooping binding database. Trust is configured in interface configuration mode with ip dhcp snooping trust; the proposed VLAN-qualified trust syntax is not valid. DHCP relay-information trust concerns Option 82 handling, and the information-option command controls insertion of relay-agent information rather than selecting the protected VLAN. Therefore, option D enables DHCP snooping on VLAN 2. Cisco Catalyst DHCP snooping configuration guidance