NSE7 Enterprise Firewall and VDOMs Practice Question
An administrator is configuring a FortiGate in transparent mode for an enterprise network. The existing gateway firewall must remain in place. How should the administrator configure the FortiGate's interfaces to ensure minimal disruption?
⚠ Common exam trap
Watch out — candidates often assume transparent mode requires unique IPs on each interface (like in NAT/route mode), leading them to choose Option C, but in transparent mode all interfaces share a single management IP to maintain Layer 2 transparency.
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
✓
Place both interfaces in the same VDOM and assign a shared management IP
In transparent mode, FortiGate acts as a Layer 2 bridge, so both interfaces must belong to the same VDOM and share a single management IP to allow administrative access without breaking the Layer 2 path. This configuration ensures the existing gateway firewall remains in place and traffic flows uninterrupted, as the FortiGate does not perform routing between its interfaces.
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 VDOMs and separate the interfaces into different VDOMs
Why it's wrong here
Separating interfaces would break layer 2 connectivity.
- ✓
Place both interfaces in the same VDOM and assign a shared management IP
Why this is correct
Transparent mode requires both interfaces to be in the same VDOM with a single management IP.
- ✗
Assign each interface a unique IP address on different subnets
Why it's wrong here
That would be routed mode, causing disruption.
- ✗
Use 802.1Q trunking on a single physical interface
Why it's wrong here
Trunking is not specific to transparent mode; the question asks about interface configuration.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.