NSE7 Advanced Threat Protection Practice Question
A FortiGate administrator has configured an antivirus profile with sandbox inspection and applied it to a firewall policy. Users report that downloads of executable files are delayed significantly, but eventually complete. The administrator wants to reduce the delay while still blocking malicious files before they reach the endpoint. Which change should the administrator make?
⚠ Common exam trap
The trap here is thinking that switching to Analyze mode is the only way to reduce delay, when adjusting the inline file size limit can preserve pre-delivery blocking for smaller files while cutting wait times.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure the sandbox profile to use a smaller file size limit for inline inspection.
Inline sandbox inspection holds files until FortiSandbox returns a verdict, which can cause noticeable delays for large files. Setting a smaller file size limit for inline inspection means only smaller files are held, reducing user wait time while still blocking malicious files within that limit. Switching to Analyze mode would remove pre-delivery blocking, and the other options do not address the latency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Switch the sandbox profile from Inline mode to Analyze mode.
Why it's wrong here
Switching to Analyze mode would reduce delay because the file is forwarded immediately, but it would also eliminate the ability to block the file before it reaches the endpoint. The administrator wants to maintain pre-delivery blocking, so Analyze mode does not meet the requirement. It would allow potentially malicious files to complete the download while analysis occurs in parallel.
- ✓
Configure the sandbox profile to use a smaller file size limit for inline inspection.
Why this is correct
Inline sandbox inspection holds files until a verdict is returned, which can cause delays for large files. By setting a smaller file size limit for inline inspection, files above that limit are handled differently, reducing the time users wait. This allows the administrator to balance security and performance while still blocking malicious files within the size threshold.
- ✗
Enable the 'Block malicious files' option in the antivirus profile.
Why it's wrong here
This option controls whether the antivirus engine blocks files it detects as malicious, but it does not affect the delay caused by sandbox inline inspection. The delay is due to the FortiGate holding the file while awaiting a FortiSandbox verdict. Enabling this setting does not change the submission mode or reduce the time the file is held.
- ✗
Add the FortiSandbox IP address to the trusted hosts list on the FortiGate.
Why it's wrong here
Trusted hosts control administrative access to the FortiGate and have no effect on sandbox file submission or inspection latency. Adding the FortiSandbox IP to trusted hosts would not change how files are held or analyzed. The delay is caused by inline inspection waiting for a verdict, not by access restrictions.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Fortinet exam blueprint
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