NSE7 Enterprise Firewall and VDOMs Practice Question
An enterprise uses multiple VDOMs on a FortiGate. The administrator needs to route traffic between VDOM-A and VDOM-B using a firewall policy. What is the correct configuration step?
⚠ Common exam trap
It's easy for candidates to assume inter-VDOM routing is automatic or can be achieved with static routes alone, but FortiGate requires an explicit VDOM link or inter-VDOM link to pass traffic between VDOMs through firewall policies.
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
✓
Configure a VDOM link between the two VDOMs and create a policy allowing traffic
A VDOM link creates a direct Layer 2 or Layer 3 connection between two VDOMs, allowing traffic to be controlled by firewall policies. This is the only method that enables policy-based inter-VDOM routing without requiring external cables or complex routing configurations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Place both VDOMs in the same virtual router and use regular policies
Why it's wrong here
VDOMs are isolated; they cannot share a virtual router.
- ✗
Create a static route in each VDOM pointing to the other VDOM's virtual interface
Why it's wrong here
Static routes alone do not allow inter-VDOM traffic; a firewall policy is required.
- ✓
Configure a VDOM link between the two VDOMs and create a policy allowing traffic
Why this is correct
A VDOM link creates a logical connection; policies then control traffic flow.
- ✗
Enable inter-VDOM routing globally under system settings
Why it's wrong here
There is no global inter-VDOM routing toggle; it's done via policies.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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