The two required actions are creating a VDOM link between VDOM-1 and VDOM-2, and then configuring explicit firewall policies on each VDOM to permit traffic across that link. This is necessary because inter-VDOM routing on a FortiGate operates through a virtual point-to-point connection, where traffic is isolated at the VDOM boundary; without firewall policies on both sides, the FortiGate will drop the packets even if the VDOM link is up and IP routing is correctly set. On the Fortinet NSE 7 Advanced Security NSE7 exam, this question tests your understanding of VDOM segmentation and the mandatory policy enforcement model—a common trap is assuming that simply enabling the link or adding static routes is enough. Remember the memory tip: “Link first, then policy on both sides—no policy, no ride.”
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 administrator needs to configure a FortiGate to allow inter-VDOM routing between VDOM-1 and VDOM-2. Which TWO actions are required? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure firewall policies on each VDOM to permit traffic across the VDOM link
Option A is correct because inter-VDOM routing requires explicit firewall policies on each VDOM to control and permit traffic traversing the VDOM link. Without these policies, the FortiGate will drop the traffic at the VDOM boundary, even if the VDOM link is up and IP addresses are configured.
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.
✓
Configure firewall policies on each VDOM to permit traffic across the VDOM link
Why this is correct
Correct.
Related concept
Read the scenario before looking for a memorised answer.
✓
Create a VDOM link between the two VDOMs
Why this is correct
Correct.
Related concept
Read the scenario before looking for a memorised answer.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume inter-VDOM routing is automatically allowed once the VDOM link is created, forgetting that firewall policies are mandatory on both sides to explicitly permit the traffic.
Detailed technical explanation
How to think about this question
A VDOM link is a logical cross-connect between two VDOMs, appearing as a pair of virtual interfaces (one in each VDOM). Traffic crossing the link is processed independently by each VDOM's firewall policy engine, meaning both ingress and egress policies must permit the session. This design enforces full security inspection at the VDOM boundary, similar to a physical firewall hop.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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 firewall policies on each VDOM to permit traffic across the VDOM link — Option A is correct because inter-VDOM routing requires explicit firewall policies on each VDOM to control and permit traffic traversing the VDOM link. Without these policies, the FortiGate will drop the traffic at the VDOM boundary, even if the VDOM link is up and IP addresses are configured.
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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