NSE4 Security Profiles Practice Question
An administrator needs to ensure that IPS signatures are updated automatically on the FortiGate. Which configuration should be verified?
⚠ Common exam trap
Candidates often confuse IPS signature updates with IPS engine updates or profile application, leading candidates to select options that affect detection or inspection rather than the update mechanism itself.
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
✓
The FortiGuard service is enabled and the signature update schedule is configured.
Automatic IPS signature updates require the FortiGuard service to be enabled and a signature update schedule to be configured. Without a schedule, updates occur only manually; without the service enabled, the FortiGate cannot connect to FortiGuard distribution servers to retrieve new signatures.
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 IPS engine is upgraded to the latest version.
Why it's wrong here
The IPS engine is the runtime code that performs packet inspection and pattern matching, but it is a separate software component from the signature database. Upgrading the engine only improves detection logic or parsing capabilities; it does not install or refresh the actual signatures, which are a distinct feed of threat indicators. Therefore, while keeping the engine current is good practice, this alone does not ensure IPS signatures are updated.
- ✗
The intrusion prevention profile is applied to the firewall policy.
Why it's wrong here
Applying an intrusion prevention profile to a firewall policy enables the FortiGate to compare traffic against the signatures currently installed on the device, but it triggers no download or fetch of new signature content. The profile references the local signature database, and any updates must occur through a separate administrative process such as a scheduled FortiGuard update. Hence, profile application affects how signatures are used, not how they are updated.
- ✗
The application control profile is set to 'monitor' for all applications.
Why it's wrong here
Application control is a distinct FortiGate feature that classifies applications using protocol decoders and heuristics, and its 'monitor' action merely logs or allows identified application traffic without blocking it. Neither application control nor its 'monitor' mode has any connection to the IPS vulnerability signature database, which is maintained and distributed through FortiGuard. Thus, configuring an application control profile as 'monitor' does not influence or perform IPS signature updates.
- ✓
The FortiGuard service is enabled and the signature update schedule is configured.
Why this is correct
To automatically maintain up-to-date IPS signatures, the FortiGate must have the FortiGuard service enabled, which requires a valid subscription contract and network access to the FortiGuard distribution servers. Additionally, an administrator must configure a signature update schedule (e.g., daily or every 2 hours) so the device periodically downloads and installs the latest IPS signature package from FortiGuard. This combination directly ensures the signature database is refreshed without manual intervention, fulfilling the administrator's requirement.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This NSE4 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 NSE4 exam.