NSE7 Enterprise Firewall and VDOMs Practice Question
A FortiGate running FortiOS 7.2 has multiple VDOMs. The administrator notices that inter-VDOM routing between two VDOMs is not working. Configuration shows a firewall policy allowing the traffic, and the route table shows routes to the destination VDOM. What additional configuration is required?
⚠ Common exam trap
Many candidates assume a firewall policy and routes are sufficient for inter-VDOM traffic, overlooking the mandatory VDOM link interface pair that provides the actual Layer 3 adjacency between the VDOMs.
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 a VDOM link interface pair and assign them to the respective VDOMs
Inter-VDOM routing requires a VDOM link, which is a pair of logical interfaces (one in each VDOM) that are directly connected. Without this link, the VDOMs cannot exchange traffic even if firewall policies and routes exist, because they operate as separate virtual firewalls with isolated forwarding tables.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure a static route with a gateway IP in the destination VDOM
Why it's wrong here
Routes are needed, but the link must exist first.
- ✓
Create a VDOM link interface pair and assign them to the respective VDOMs
Why this is correct
Inter-VDOM routing requires a VDOM link (logical interface pair) connecting the VDOMs.
- ✗
Assign an IP address to the VLAN interface on the source VDOM
Why it's wrong here
IP addresses are needed but the fundamental link is missing.
- ✗
Enable 'inter-vdom' under config system global
Why it's wrong here
That setting enables VDOMs, not inter-VDOM routing.
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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.