NSE7 Enterprise Firewall and VDOMs Practice Question
This NSE7 practice question tests your understanding of enterprise firewall and vdoms. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 configures inter-VDOM routing between VDOM-A and VDOM-B using a VDOM link. After configuration, traffic from VDOM-A cannot reach VDOM-B. Which configuration step is MOST likely missing?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a firewall policy on VDOM-A and VDOM-B allowing traffic over the VDOM link interface
VDOM links are special inter-VDOM interfaces that require firewall policies on both VDOMs to permit traffic. Without a policy on VDOM-A and VDOM-B that allows traffic over the VDOM link interface, packets will be dropped by the implicit deny rule. This is the most common missing step when inter-VDOM routing fails.
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.
✓
Create a firewall policy on VDOM-A and VDOM-B allowing traffic over the VDOM link interface
Why this is correct
Each VDOM must have a policy allowing traffic to/from the VDOM link interface, similar to any other interface.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable 'inter-vdom-routing' under system settings
Why it's wrong here
Inter-VDOM routing is enabled by default when VDOMs are enabled; the missing step is typically a policy.
✗
Configure a static route on VDOM-A pointing to VDOM-B's subnet via the VDOM link
Why it's wrong here
If the VDOM link is a point-to-point link, routes may be needed but policies are still required.
✗
Assign both VDOM link interfaces to the same VDOM
Why it's wrong here
The VDOM link has two ends, one in each VDOM; they are in different VDOMs by design.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume static routes or a global inter-VDOM routing toggle are required, overlooking that VDOM links function like physical interfaces and need firewall policies to permit traffic.
Detailed technical explanation
How to think about this question
A VDOM link consists of two logical interfaces, each belonging to a different VDOM, and traffic traversing the link is subject to firewall policies on both sides. The implicit deny policy at the end of the policy list will block all traffic unless an explicit permit policy is configured. In FortiOS, inter-VDOM routing does not require a separate routing protocol or static route if the VDOM link interfaces are in the same subnet and the destination is directly connected.
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 security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
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: Create a firewall policy on VDOM-A and VDOM-B allowing traffic over the VDOM link interface — VDOM links are special inter-VDOM interfaces that require firewall policies on both VDOMs to permit traffic. Without a policy on VDOM-A and VDOM-B that allows traffic over the VDOM link interface, packets will be dropped by the implicit deny rule. This is the most common missing step when inter-VDOM routing fails.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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