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F5N4 Verified 2026 Edition

NGINX Troubleshoot Practice Test

NGINX Troubleshoot (F5N4) is one of the four exams that make up the F5 Certified Administrator, NGINX credential, and they can be taken in any order. It suits administrators who know the Linux command line and core NGINX Open Source features. The practice test is built around stopping, starting and reloading NGINX, troubleshooting basic use cases and fixing TLS security settings.

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Exam Information

Official specifications published by F5

Exam Format

30 min
30
245
Administrator

Registration

$50 USD
Certiverse (online proctored) or online proctoring

Validity

2 years from the date you pass the last of the four exams

F5N4 Exam Topics and Domains

F5N4 is organized into 3 weighted domains.

1

Demonstrate how to stop, start, and reload NGINX binary

33%

Demonstrate how to stop, start, and reload NGINX binary

Describe how to send signals to the NGINX processDescribe the difference between a reload and a stop/startDescribe how to test a new configuration before applying it
  • Describe how to send signals to the NGINX process
  • Describe the difference between a reload and a stop/start
  • Describe how to test a new configuration before applying it
2

Troubleshoot basic use cases

34%

Troubleshoot basic use cases

Interpret logsIdentify start up failuresDescribe how to deal with HTTP error codesDescribe how to troubleshoot various responseDescribe how to troubleshoot use cases with multiple virtual hosts, multiple ports, and default serversDescribe how to troubleshoot location precedence and add_header inheritanceDescribe how to troubleshoot client and server connectionsDescribe basic SELinux use cases
  • Interpret logs
  • Identify start up failures
  • Describe how to deal with HTTP error codes
  • Describe how to troubleshoot various response
  • Describe how to troubleshoot use cases with multiple virtual hosts, multiple ports, and default servers
  • Describe how to troubleshoot location precedence and add_header inheritance
  • Describe how to troubleshoot client and server connections
  • Describe basic SELinux use cases
3

Troubleshoot TLS security settings

33%

Troubleshoot TLS security settings

Identify TLS connection errorsDescribe how to troubleshoot invalid certificates
  • Identify TLS connection errors
  • Describe how to troubleshoot invalid certificates

How do I earn this certification?

Passing F5N4 earns the F5 Certified Administrator, NGINX (F5-CA, NGINX) certification. It sits in the NGINX (F5 Certified Administrator) track.

Current Level Exams
Next Level Options
F5 Certified Associate, NGINX (F5-AA, NGINX) related paths F5 does not publish a formal professional-tier NGINX exam progression above F5-CA, NGINX at time of research.
Alternative Paths
101 - Application Delivery FundamentalsEntry point into F5's broader BIG-IP certification track for candidates who also work with F5 application delivery.

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How to study for this exam?

The most effective way to prepare for F5N4 is by using the PlanetCert Simulator to practice questions and review detailed explanations.

NGINX Troubleshoot (F5N4) exam pageF5 NGINX Certification Blueprint (all four exams)NGINX Troubleshoot (F5CAN4) course listingF5 Certified Administrator, NGINX learning pathResources for NGINX Certification Exam PreparationF5 NGINX Certification FAQWhat is the NGINX Certification (F5-CA, NGINX)?How do I schedule an NGINX exam?

What's changed on this exam?

Current Status
  • ACTIVE
  • Last content update: Blueprint ©2021 F5, Inc.

Who should take this exam?

  • Familiarity with the Linux command line
  • Experience with essential/foundational NGINX OSS functionality
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Common Questions

What is the F5N4 NGINX Troubleshoot exam?
F5N4 (NGINX Troubleshoot) is one of the four exams required to earn the F5 Certified Administrator, NGINX (F5-CA, NGINX) credential. It validates a candidate's ability to stop, start, reload, and test the NGINX binary; troubleshoot basic use cases such as interpreting logs, start-up failures, HTTP error codes, virtual host/port/default-server issues, location precedence and add_header inheritance, client/server connections, and basic SELinux cases; and troubleshoot TLS security settings includin
How many questions are on the F5N4 exam and how long is it?
The F5N4 exam has 30 questions and a 30-minute time limit, with no time extensions. Most questions ask you to select one correct answer, while some require selecting two correct answers with no partial credit.
What is the passing score for F5N4?
The passing score is 245, the same for all four NGINX exams. F5 uses scaled scoring, so a 245 scaled score represents the passing standard rather than a raw number of correct answers.
How much does the F5N4 exam cost and how is it delivered?
Each NGINX exam, including F5N4, costs $50 USD and is delivered online through the Certiverse proctored platform, in English.
What topics does the F5N4 NGINX Troubleshoot exam cover?
F5N4 covers three objective areas: (1) stopping, starting, and reloading the NGINX binary (signals, reload vs restart, testing config with nginx -t); (2) troubleshooting basic use cases (log interpretation, start-up failures, HTTP error codes, multiple virtual hosts/ports/default servers, location precedence and add_header inheritance, client/server connections, and basic SELinux); and (3) troubleshooting TLS security settings (TLS connection errors and invalid certificates).
Are there prerequisites for F5N4 and must the four exams be taken in order?
There are no prerequisites. The four NGINX exams (F5N1, F5N2, F5N3, F5N4) can be taken in any order with no waiting period between them.
Is F5N4 based on NGINX Open Source or NGINX Plus?
The NGINX certification, including F5N4, is based on NGINX Open Source Software (OSS), not NGINX Plus.
How long is the F5 Certified Administrator, NGINX certification valid?
The certification is valid for two years from the date you pass the last of the four exams. Achievers receive a Credly badge.

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