This NSE4 practice question tests your understanding of security profiles. 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.
A FortiGate is configured with an SSL deep inspection profile that uses 'Certificate Inspection' (not 'Full SSL Inspection'). Which of the following is TRUE about this configuration?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The FortiGate can block HTTPS connections based on the certificate's CN
Option C is correct. Certificate inspection only validates the server certificate's Common Name (CN) and expiration; it does not decrypt the traffic payload, so the antivirus and IPS cannot inspect encrypted content.
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.
✗
Deep inspection can still see client certificates
Why it's wrong here
Certificate inspection does not inspect client certificates.
✗
The antivirus profile can scan the HTTPS payload
Why it's wrong here
Without decryption, antivirus cannot see the encrypted payload.
✓
The FortiGate can block HTTPS connections based on the certificate's CN
Why this is correct
Certificate inspection allows blocking based on certificate CN as part of web filtering.
Related concept
Read the scenario before looking for a memorised answer.
✗
IPS can still inspect the application layer of HTTPS traffic
Why it's wrong here
IPS needs decrypted traffic to inspect application layer.
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.
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 FortiGate can block HTTPS connections based on the certificate's CN — Option C is correct. Certificate inspection only validates the server certificate's Common Name (CN) and expiration; it does not decrypt the traffic payload, so the antivirus and IPS cannot inspect encrypted content.
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.
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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