The answer is that the session is an established TCP session to port 443, lasting 3600 seconds with 3598 seconds remaining. This is correct because the output from the diagnose sys session filter dport 443 command shows proto=6, which is the protocol number for TCP, and proto_state=01, which specifically indicates a fully established TCP connection. The duration and expire values are both in seconds, so a duration of 3600 means the session has been active for one hour, while an expire of 3598 means the session will be removed from the session table in just under an hour if no further traffic is seen. On the Fortinet NSE 7 Advanced Security exam, this question tests your ability to interpret TCP session state output directly from the FortiGate CLI, a common skill for troubleshooting real-world firewall behavior. A common trap is confusing proto_state=01 with a half-open or closing state, but remember that 01 always means established. A useful memory tip: "01 is one fully open door" — the session is fully connected and active.
NSE7 Troubleshooting and Diagnostics Practice Question
This NSE7 practice question tests your understanding of troubleshooting and diagnostics. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. 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 runs 'diagnose sys session filter dport 443' and sees output indicating sessions with state 'proto=6 proto_state=01 duration=3600 expire=3598'. What does this output indicate about the session?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The session is an established TCP session to port 443, lasting 3600 seconds with 3598 seconds remaining
Option A is correct. The output shows a TCP session (proto=6) with state 01 (TCP session established). Duration and expire values are in seconds. This indicates an active TCP session that has been established for 3600 seconds (1 hour) and will expire in 3598 seconds.
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.
✗
The session is an expired TCP session that is being removed
Why it's wrong here
The expire value is positive, meaning the session is still active.
✗
The session is a UDP session to port 443 that has been idle for 3600 seconds
The session is an established TCP session to port 443, lasting 3600 seconds with 3598 seconds remaining
Why this is correct
Correct interpretation of the diagnose output.
Related concept
Read the scenario before looking for a memorised answer.
✗
The session is blocked by a firewall policy and has been logged
Why it's wrong here
The output shows an active session, not a blocked one.
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.
Trap categories for this question
Command / output trap
The output shows an active session, not a blocked one.
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 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 NSE7 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.
Troubleshooting and Diagnostics — This question tests Troubleshooting and Diagnostics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The session is an established TCP session to port 443, lasting 3600 seconds with 3598 seconds remaining — Option A is correct. The output shows a TCP session (proto=6) with state 01 (TCP session established). Duration and expire values are in seconds. This indicates an active TCP session that has been established for 3600 seconds (1 hour) and will expire in 3598 seconds.
What should I do if I get this NSE7 question wrong?
Identify which NSE7 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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