This NSE7 practice question tests your understanding of advanced threat protection. 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.
An administrator configures a FortiGate to integrate with FortiSandbox for inline scanning. The policy has an antivirus profile with FortiSandbox enabled. What condition must be met for files to be submitted to FortiSandbox?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The antivirus profile must use proxy-based inspection mode
For files to be submitted to FortiSandbox during inline scanning, the antivirus profile must use proxy-based inspection mode. This is because proxy-based inspection allows the FortiGate to buffer the entire file, perform deep analysis, and then forward it to FortiSandbox for verdict-based blocking. Flow-based inspection, in contrast, streams packets and cannot hold files for submission, making proxy mode a prerequisite for inline FortiSandbox integration.
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 antivirus profile must use proxy-based inspection mode
Why this is correct
Proxy-based inspection is required for inline FortiSandbox file submission.
Related concept
Read the scenario before looking for a memorised answer.
✗
The FortiSandbox must be on the same subnet as the FortiGate
Why it's wrong here
FortiSandbox can be reachable via routed networks.
✗
The FortiGate must be in NAT mode
Why it's wrong here
NAT mode is irrelevant; FortiSandbox works in both NAT and transparent modes.
✗
SSL inspection must be disabled
Why it's wrong here
SSL inspection does not prevent FortiSandbox submission.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume flow-based inspection is sufficient for inline sandboxing, but FortiGate explicitly requires proxy-based inspection to buffer and submit files for verdict-based blocking.
Detailed technical explanation
How to think about this question
Under the hood, proxy-based inspection reassembles the entire file in memory, calculates a SHA256 hash, and queries FortiSandbox for a verdict. If the file is unknown, it is uploaded via the FortiSandbox API (using a dedicated communication channel over HTTPS). In real-world deployments, administrators often overlook that flow-based inspection cannot buffer files, leading to false negatives where malicious files bypass detection because they are never submitted. Additionally, the FortiGate must have a valid FortiSandbox license and the FortiSandbox server must be reachable on TCP/443 or the configured port.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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.
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 antivirus profile must use proxy-based inspection mode — For files to be submitted to FortiSandbox during inline scanning, the antivirus profile must use proxy-based inspection mode. This is because proxy-based inspection allows the FortiGate to buffer the entire file, perform deep analysis, and then forward it to FortiSandbox for verdict-based blocking. Flow-based inspection, in contrast, streams packets and cannot hold files for submission, making proxy mode a prerequisite for inline FortiSandbox integration.
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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