NSE7 Enterprise Firewall and VDOMs Practice Question
An administrator has configured two VDOMs on a FortiGate. One VDOM is in NAT mode and the other in transparent mode. The administrator wants traffic from the transparent mode VDOM to be routed through the NAT mode VDOM. What must be configured to allow inter-VDOM routing?
⚠ Common exam trap
Many candidates assume firewall policies alone can route traffic between VDOMs, but without an inter-VDOM link, the VDOMs are completely isolated and cannot exchange any traffic regardless of policy configuration.
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
✓
Create an inter-VDOM link
Inter-VDOM routing between VDOMs in different modes (NAT and transparent) requires a dedicated inter-VDOM link (IVL), which is a virtual internal connection that allows traffic to pass between VDOMs without consuming physical ports. The IVL creates a pair of virtual interfaces, one in each VDOM, and firewall policies must be configured to permit traffic across them. This is the only method that supports routing between VDOMs of different modes on the same FortiGate.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use a physical interface to connect the VDOMs
Why it's wrong here
VDOMs are software constructs; a physical interface is not used for inter-VDOM routing.
- ✓
Create an inter-VDOM link
Why this is correct
Inter-VDOM links enable routing between VDOMs.
- ✗
Enable NPU offloading
Why it's wrong here
NPU offloading is for hardware acceleration, not inter-VDOM connectivity.
- ✗
Configure firewall policies between the VDOMs
Why it's wrong here
Firewall policies are needed but a VDOM link must exist first.
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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.