A FortiGate is configured with multiple VDOMs. The administrator wants to assign a specific physical interface to a non-management VDOM and ensure that the interface is not visible or configurable from other VDOMs. The interface is currently assigned to the root VDOM. What is the correct procedure to reassign the interface to VDOM-1?
To move a physical interface from one VDOM to another, you must first remove any configuration that references the interface in its current VDOM, such as firewall policies, routes, and DHCP server settings. Then, in the global configuration, you can change the interface's VDOM assignment. This ensures that the interface is cleanly detached before being reassigned. After reassignment, the interface becomes visible only in the target VDOM.
Why this answer
Reassigning a physical interface to a different VDOM requires removing all references to that interface in its current VDOM, such as firewall policies, routes, and DHCP settings. Once the interface is free of references, you can change its VDOM assignment in the global configuration. This process ensures that the interface is cleanly moved and becomes exclusively available to the target VDOM, maintaining proper isolation between VDOMs.
Exam trap
The trap here is thinking that changing the VDOM assignment automatically cleans up references or that you can edit the interface from the target VDOM, when in fact you must manually remove references from the current VDOM first.