- A
The application control profile is applied to the outbound policy but not to the inbound policy.
Why wrong: Outbound policy is correct for users accessing external services; inbound policy is for incoming traffic.
- B
The application control profile is set to 'Monitor' instead of 'Block' for the Peer-to-Peer category.
If the action is monitor, traffic is logged but not blocked. The profile must be set to block.
- C
BitTorrent is not a recognized application in the FortiGuard application control database.
Why wrong: BitTorrent is a well-known application and is included in the Peer-to-Peer category.
- D
The firewall policy has SSL inspection set to certificate inspection, so the FortiGate cannot see the application.
Why wrong: Application control can identify many applications even without decryption, but for encrypted traffic, deep inspection may be needed. However, BitTorrent often uses non-standard ports and can be detected by signatures.
Quick Answer
The answer is that the application control profile is set to 'Monitor' instead of 'Block' for the Peer-to-Peer category. This is the most likely cause because when an application control rule is configured with the action set to 'Monitor', the FortiGate will only log and allow the traffic to pass, rather than actively blocking it. For application control to prevent peer-to-peer traffic like BitTorrent, the action must be explicitly set to 'Block' within the profile. On the Fortinet NSE 4 Network Security Professional NSE4 exam, this scenario tests your understanding of the difference between 'Monitor' and 'Block' actions in application control profiles, a common trap where administrators assume applying a profile is enough without verifying the action setting. Remember the memory tip: "Monitor lets it through, Block stops it cold"—always double-check the action column in your application control rule to ensure it says 'Block' when your goal is to stop P2P traffic.
NSE4 Security Profiles Practice Question
This NSE4 practice question tests your understanding of security profiles. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A FortiGate administrator needs to prevent employees from using peer-to-peer file sharing applications such as BitTorrent. The administrator creates an application control profile with a rule to block the 'Peer-to-Peer' application category. After applying the profile to the firewall policy, users can still use BitTorrent. What is the most likely cause?
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 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
The application control profile is set to 'Monitor' instead of 'Block' for the Peer-to-Peer category.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The application control profile is applied to the outbound policy but not to the inbound policy.
Why it's wrong here
Outbound policy is correct for users accessing external services; inbound policy is for incoming traffic.
- ✓
The application control profile is set to 'Monitor' instead of 'Block' for the Peer-to-Peer category.
Why this is correct
If the action is monitor, traffic is logged but not blocked. The profile must be set to block.
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.
- ✗
BitTorrent is not a recognized application in the FortiGuard application control database.
Why it's wrong here
BitTorrent is a well-known application and is included in the Peer-to-Peer category.
- ✗
The firewall policy has SSL inspection set to certificate inspection, so the FortiGate cannot see the application.
Why it's wrong here
Application control can identify many applications even without decryption, but for encrypted traffic, deep inspection may be needed. However, BitTorrent often uses non-standard ports and can be detected by signatures.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 NSE4 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 NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Security Profiles — study guide chapter
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Security Profiles practice questions
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FAQ
Questions learners often ask
What does this NSE4 question test?
Security Profiles — This question tests Security Profiles — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The application control profile is set to 'Monitor' instead of 'Block' for the Peer-to-Peer category.
What should I do if I get this NSE4 question wrong?
Identify which NSE4 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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.
About these practice questions
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Last reviewed: Jun 21, 2026
This NSE4 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 NSE4 exam.
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