A Fortinet certification remains one of the clearest career accelerators in IT. The Fortinet Network Security Expert 4 Written Exam (400) exam stands in the way, and the 303 practice questions at ActualPDF are the direct route through it.
Fortinet NSE4 Exam Overview:
| Certification Vendor: | Fortinet |
|---|---|
| Exam Name: | Network Security Expert 4 Written Exam (400) |
| Exam Number: | NSE4_FGT-400 |
| Exam Duration: | 120 minutes |
| Passing Score: | Approximately 60% - 70% (varies by exam version) |
| Exam Format: | Multiple choice, Multiple select |
| Available Languages: | English |
| Real Exam Qty: | 60 - 70 (varies by exam version) |
| Related Certifications: | Fortinet Certified Solution Specialist Fortinet Certified Professional Network Security NSE 3 Network Security Associate |
| Certificate Validity Period: | 2 years |
| Exam Price: | USD 200 (may vary by region) |
| Recommended Training: | Fortinet NSE 4 Study Resources FortiGate Administrator Course |
| Exam Registration: | Fortinet Training Institute Exam Registration Pearson VUE Fortinet Exams |
| Sample Questions: | ![]() |
| Exam Way: | Online proctored or authorized testing center (Pearson VUE) |
| Pre Condition: | Recommended: NSE 3 or equivalent networking/security knowledge. No strict prerequisite required. |
| Official Syllabus URL: | https://www.fortinet.com/training-certification |
Fortinet NSE4 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| FortiGate Administration | - Firewall policies and objects - User authentication and identity-based policies - Initial configuration and system settings |
| Network Design and Routing | - NAT configuration - Static and dynamic routing - SD-WAN fundamentals |
| High Availability and Monitoring | - HA clustering concepts - Logging, monitoring, and reporting - Troubleshooting tools and diagnostics |
| VPN Technologies | - SSL VPN setup and troubleshooting - IPsec VPN configuration |
| Network Security Fundamentals | - Fortinet Security Fabric overview - Security concepts and threat landscape |
| Security Services | - SSL inspection and certificate management - Antivirus, IPS, and application control - Web filtering and DNS filtering |
Fortinet NSE4 Exam: FAQ for Serious Candidates
Fortinet Network Security Expert 4 Written Exam (400) is an official Fortinet exam, listed under exam code NSE4. A passing result earns you the Fortinet Network Security Expert (NSE) 4 / Fortinet Certified Professional (Network Security) certification at the Professional level. It also ties into NSE 3 Network Security Associate, Fortinet Certified Professional Network Security, Fortinet Certified Solution Specialist, extending its value across your certification roadmap. Employers read this credential as verified competence, which is why it keeps appearing in job requirements.
Expect 60 - 70 (varies by exam version) questions inside 120 minutes on the Fortinet Network Security Expert 4 Written Exam (400) exam. That pace punishes hesitation, so rehearse it: the ActualPDF software engine simulates the real exam scene, reminds you of the questions you got wrong, and pushes you to re-practice them until the clock stops being your enemy.
Passing Fortinet Network Security Expert 4 Written Exam (400) requires Approximately 60% - 70% (varies by exam version), and the official registration fee is USD 200 (may vary by region). Retakes charge the full USD 200 (may vary by region) again, which is why experienced candidates treat preparation as the cheaper exam fee. Verify your readiness with repeated ActualPDF practice scores above the requirement before you commit to a date.
Recommended: NSE 3 or equivalent networking/security knowledge. No strict prerequisite required.
Requirements evolve, so confirm the current conditions before registering on the official exam page.
Registration for Fortinet Network Security Expert 4 Written Exam (400) goes through the official channels listed here.
When you schedule, note that the exam is delivered Online proctored or authorized testing center (Pearson VUE).
Fortinet recommends the following training for Fortinet Network Security Expert 4 Written Exam (400) candidates.
Follow any course with the 303 practice questions in the ActualPDF NSE4 package; the software engine will even remind you which mistakes need another round.
Yes. ActualPDF provides a free download demo of the Fortinet Network Security Expert 4 Written Exam (400) material, so you can check the content before choosing a version. After purchase, a one-year warranty covers you: the latest version is sent to you as it releases, free for 365 days, and after expiry you can extend the update service at a 50% discount.
Your purchase is covered by a 100% money-back guarantee with clear conditions. Take the Fortinet Network Security Expert 4 Written Exam (400) exam within 60 days of purchase; if you fail, provide your unqualified result by submitting a scanned enrollment slip and the official Score Report PDF within 2 days of the exam, and the full refund is processed within 7 days. The exam must match your product, candidate and payer names must match, and attempts within 3 days of purchase, unused downloads, free materials, and expired orders are not covered. Alternatively, exchange for two other exam products of equal value, free, or wait for updates while keeping your original product's update service.
Delivery is instant: files unlock for download at payment and are emailed within one minute. If nothing arrives within 2 hours, check spam and contact customer service, which works 7/24 and normally replies within two hours. Installation is unlimited across your computers.
The Fortinet Network Security Expert 4 Written Exam (400) syllabus spans 6 domains, led by High Availability and Monitoring, FortiGate Administration, and Security Services. The complete topic list is published above; candidates who study the map first rarely get lost later.
Fortinet Network Security Expert 4 Written Exam (400) Sample Questions:
Question 1
Which of the following statements best describes the role of a DC agents in an FSSO DC?
A. Captures the user IP address and workstation name and forward that information to the
FortiGate devices.
B. Captures the login events and forward them to the collector agent.
C. Captures the login and logoff events and forward them to the collector agent.
D. Captures the login events and forward them to the FortiGate devices.
Question 2
Which IPSec mode includes the peer id information in the first packet?
A. Aggressive mode.
B. Main mode.
C. IKEv2 mode.
D. Quick mode.
Question 3
In FortiOS session table output, what are the two possible 'proto_state' values for a UDP session? (Choose two.)
A. 01
B. 00
C. 05
D. 11
Question 4
In an IPSec gateway-to-gateway configuration, two FortiGate units create a VPN tunnel between two separate private networks. Which of the following configuration steps must be performed on both FortiGate units to support this configuration?
A. Create firewall policies to control traffic between the IP source and destination address.
B. Configure the appropriate user groups on the FortiGate units to allow users access to the IPSec VPN connection.
C. Define the Phase 2 parameters that the FortiGate unit needs to create a VPN tunnel with the remote peer.
D. Set the operating mode of the FortiGate unit to IPSec VPN mode.
E. Define the Phase 1 parameters that the FortiGate unit needs to authenticate the remote peers.
Question 5
How do application control signatures update on a FortiGate device?
A. Signatures are hard coded to the device and cannot be updated.
B. Through FortiGuard updates.
C. Upgrade the FortiOS firmware to a newer release.
D. By running the Application Control auto-learning feature.
Solutions:
| Question 1 Answer: C | Question 2 Answer: A | Question 3 Answer: A,B | Question 4 Answer: A,C,E | Question 5 Answer: B |
PDF Version Demo



