The answer is the `diagnose sys session top-talkers` command, along with filtering sessions by source IP and listing sessions per policy. These three commands work together to pinpoint the source of a high session count because they shift focus from aggregate statistics to granular traffic patterns: `top-talkers` reveals which IPs or users are generating the most sessions, while filtering by source IP isolates specific hosts, and listing per policy identifies which firewall rule is being overwhelmed. On the Fortinet NSE 7 Advanced Security NSE7 exam, this scenario tests your ability to move beyond basic `diagnose sys session stat` output and apply targeted troubleshooting for performance degradation—a common trap is stopping at the summary stat without drilling down. Remember the memory tip: “Talkers, sources, policies—three lenses to see the session crisis.”
NSE7 Troubleshooting and Diagnostics Practice Question
This NSE7 practice question tests your understanding of troubleshooting and diagnostics. 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 administrator is investigating a slow network issue. The 'diagnose sys session stat' shows a high number of sessions. Which THREE commands can help identify the source of the high session count?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
diagnose sys session list | grep <policy_id>
To identify high session count sources, the administrator can list sessions filtered by source IP, list sessions per policy, or use top talkers.
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.
✓
diagnose sys session list | grep <policy_id>
Why this is correct
Counts sessions per policy to see which policy is most used.
Related concept
Read the scenario before looking for a memorised answer.
✓
diagnose sys session filter src <IP>
Why this is correct
Filters sessions by source IP to see if a specific host is generating many sessions.
Related concept
Read the scenario before looking for a memorised answer.
✓
diagnose sys session top-talkers
Why this is correct
Displays top session generators by source IP.
Related concept
Read the scenario before looking for a memorised answer.
✗
diagnose sys session stat
Why it's wrong here
This only shows the total count, not the source.
✗
diagnose netlink interface list
Why it's wrong here
Shows interface information, not session details.
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
This only shows the total count, not the source.
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: diagnose sys session list | grep <policy_id> — To identify high session count sources, the administrator can list sessions filtered by source IP, list sessions per policy, or use top talkers.
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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