The correct configuration step is to configure a VDOM link between the two VDOMs and create a firewall policy allowing traffic. This is the only method that enables policy-based inter-VDOM routing without requiring physical cables or complex static routes, because a VDOM link establishes a direct Layer 2 or Layer 3 connection between VDOMs, allowing traffic to be inspected and controlled by firewall policies just like traffic between physical interfaces. On the Fortinet NSE 7 Advanced Security NSE7 exam, this question tests your understanding of inter-VDOM routing and the distinction between VDOM links, inter-VDOM routing via external interfaces, and backend routing—a common trap is assuming you can simply route between VDOMs using a regular policy without first creating the link. Remember the memory tip: “No link, no policy—VDOM links are the bridge that makes firewall rules between VDOMs possible.”
NSE7 Enterprise Firewall and VDOMs Practice Question
This NSE7 practice question tests your understanding of enterprise firewall and vdoms. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
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
Option C is correct because 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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding 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.
✗
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.
Related concept
Read the scenario before looking for a memorised answer.
✗
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates 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.
Detailed technical explanation
How to think about this question
A VDOM link is a logical interface pair (e.g., vdom-link0 and vdom-link1) that behaves like a direct cable between two VDOMs. Traffic crossing the link is subject to firewall policies in each VDOM, enabling granular control. In real-world deployments, this is used to segment management, guest, and internal networks while maintaining policy-based access between them.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the NSE7 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Enterprise Firewall and VDOMs — This question tests Enterprise Firewall and VDOMs — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a VDOM link between the two VDOMs and create a policy allowing traffic — Option C is correct because 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.
What should I do if I get this NSE7 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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