The answer is that the file size exceeds the maximum size configured for FortiSandbox scanning. This is the most likely reason because FortiGate’s antivirus and web filtering profiles enforce file size limits before any submission to FortiSandbox occurs; if a file is larger than the configured threshold, FortiGate simply skips forwarding it, regardless of the action set for malicious verdicts. On the Fortinet NSE 7 Advanced Security NSE7 exam, this concept tests your understanding of how scanning profiles interact with external sandboxing—a common trap is assuming all suspicious files are automatically sent, when in reality size and type filters act as a gatekeeper. Remember that FortiSandbox submission is not a blanket process; it respects the same file-size constraints you set for local scanning. A helpful memory tip: think of it as a bouncer at a club—if the file is too big, it never even gets to the sandbox line.
NSE7 Advanced Threat Protection Practice Question
This NSE7 practice question tests your understanding of advanced threat protection. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 configured FortiGate to forward suspected malicious files to FortiSandbox. They set the action to 'block' for malicious verdicts. Some files are being blocked, but others with a 'clean' verdict are allowed. However, they notice that some files that should have been sent to FortiSandbox are not being forwarded. Which reason is MOST likely?
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 the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The file size exceeds the maximum size configured for FortiSandbox scanning
Option C is correct. FortiGate uses a scanning profile that includes file size and type limits; if the file exceeds the maximum size configured for FortiSandbox submission, it will not be forwarded.
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 FortiGate antivirus engine is set to proxy-based mode
Why it's wrong here
Proxy mode is fine for sandbox integration.
✗
The FortiGate has insufficient disk space for temporary files
Why it's wrong here
Disk space issues would affect overall scanning but are less specific to sandbox submission.
✓
The file size exceeds the maximum size configured for FortiSandbox scanning
Why this is correct
File size limits in the scanning profile prevent oversized files from being submitted to FortiSandbox.
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.
✗
The FortiSandbox device is overloaded and rejecting submissions
Why it's wrong here
Overload would affect submissions but would likely result in errors, not silent dropping.
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 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.
Advanced Threat Protection — This question tests Advanced Threat Protection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The file size exceeds the maximum size configured for FortiSandbox scanning — Option C is correct. FortiGate uses a scanning profile that includes file size and type limits; if the file exceeds the maximum size configured for FortiSandbox submission, it will not be forwarded.
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.
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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A FortiGate is configured to submit files to FortiSandbox. The administrator notices that files are being submitted but no verdicts are returned. Which two conditions could cause this?
hard
A.The FortiSandbox server is not reachable from the FortiGate
B.The file type is not supported by FortiSandbox
C.The file size exceeds the FortiSandbox submission limit
D.The FortiSandbox license has expired
E.The antivirus profile is set to monitor mode
Why : If FortiSandbox is not reachable or the file is too large, verdicts may not be returned. Other options like expiry or incorrect scan mode do not prevent verdict return.
Last reviewed: Jun 21, 2026
Question Discussion
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This NSE7 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 NSE7 exam.
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