NSE7 Enterprise Firewall and VDOMs Practice Question
An administrator is configuring a FortiGate with multiple VDOMs. The administrator wants to assign a physical interface to a specific VDOM and ensure that the interface is dedicated to that VDOM only. Which action should the administrator take?
⚠ Common exam trap
Candidates often confuse interface dedication with VLAN sharing, or inventing a 'dedicated' setting that does not exist.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
In the interface configuration, set the VDOM field to the desired VDOM.
To dedicate a physical interface to a VDOM, you assign the interface to that VDOM by setting its VDOM field in the interface configuration. This removes the interface from other VDOMs and makes it exclusively available to the assigned VDOM. Other methods like VLANs are used for sharing, and there is no 'dedicated' option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable the 'dedicated' option in the interface settings and select the VDOM.
Why it's wrong here
FortiOS does not have a 'dedicated' option in interface settings. The VDOM assignment is done solely by setting the VDOM field. The term 'dedicated' is not part of the interface configuration. This option is a distractor that invents a non-existent feature, leading to confusion about the actual configuration method.
- ✓
In the interface configuration, set the VDOM field to the desired VDOM.
Why this is correct
Each physical interface on a FortiGate can be assigned to a single VDOM. By setting the VDOM field in the interface configuration to the desired VDOM, the interface becomes dedicated to that VDOM. It will no longer be available to other VDOMs. This is the standard method to allocate physical interfaces to VDOMs, ensuring isolation and proper traffic handling.
- ✗
Create a VLAN interface on the physical interface and assign the VLAN interface to the desired VDOM.
Why it's wrong here
Creating a VLAN interface and assigning it to a VDOM does not dedicate the physical interface to that VDOM. The physical interface remains in the global VDOM or its current VDOM, and the VLAN interface is a logical sub-interface. This approach is used for sharing a physical interface among multiple VDOMs via VLANs, not for dedicating the entire physical interface to one VDOM.
- ✗
Use the 'set vdom' command in the global configuration to move the interface to the desired VDOM.
Why it's wrong here
The 'set vdom' command is used within the interface configuration context, not in the global configuration. While the command syntax is similar, it must be applied under 'config system interface' and then 'edit <interface>'. Simply using it in global configuration without specifying the interface will not work. This option misstates the correct command context.
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Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Fortinet exam blueprint
This NSE7 practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the NSE7 exam.