NSE7 Enterprise Firewall and VDOMs Practice Question
This NSE7 practice question tests your understanding of enterprise firewall and vdoms. 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 the command 'diagnose sys session filter dport 443' on a FortiGate and sees the following output:
proto=6 proto_state=01 duration=3600 expire=3599
What does this 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 in SYN_SENT state, meaning the three-way handshake is incomplete
The output shows `proto=6` (TCP), `proto_state=01`, `duration=3600`, and `expire=3599`. In FortiGate's session table, `proto_state=01` represents the TCP state `SYN_SENT`, which means the session has sent a SYN but has not yet received a SYN-ACK, so the three-way handshake is incomplete. The `expire=3599` indicates the session will time out in 3599 seconds if the handshake does not complete, but the session is not yet established.
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 in SYN_SENT state, meaning the three-way handshake is incomplete
Why this is correct
State 01 indicates SYN_SENT; the session has not yet received a SYN-ACK.
Related concept
Read the scenario before looking for a memorised answer.
✗
The session is fully established and will expire in about 3599 seconds
Why it's wrong here
State 01 is SYN_SENT, not established.
✗
The traffic is being blocked by the firewall policy
Why it's wrong here
The session exists, so it is not blocked; it is simply pending.
✗
The session is using HTTPS and has been inspected
Why it's wrong here
No indication of inspection; state is just SYN_SENT.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume `dport 443` and `expire=3599` mean an established HTTPS session, but the `proto_state=01` value explicitly indicates an incomplete handshake, not a fully established connection.
Detailed technical explanation
How to think about this question
FortiGate uses internal TCP state codes in the session table: `01` for SYN_SENT, `02` for SYN_RECV, `04` for ESTABLISHED (often shown as `08` in some versions), and `10` for FIN_WAIT. The `duration=3600` and `expire=3599` indicate the session was created 1 second ago and has a default timeout of 3600 seconds for incomplete sessions (SYN_SENT). In real-world scenarios, a high number of sessions in `proto_state=01` could indicate a SYN flood attack or a misconfigured client that cannot complete the handshake.
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 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 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: The session is in SYN_SENT state, meaning the three-way handshake is incomplete — The output shows `proto=6` (TCP), `proto_state=01`, `duration=3600`, and `expire=3599`. In FortiGate's session table, `proto_state=01` represents the TCP state `SYN_SENT`, which means the session has sent a SYN but has not yet received a SYN-ACK, so the three-way handshake is incomplete. The `expire=3599` indicates the session will time out in 3599 seconds if the handshake does not complete, but the session is not yet established.
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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