You can see it againUnder pressure people bring back shapes and positions long after the wording has gone.
Picture superiority · Shepard 1967, Standing 1973
JUNIPER NETWORKSJuniper Networks Certified Specialist, Security (JNCIS-SEC)
The Juniper Networks Certified Specialist, Security (JNCIS-SEC) certification validates your ability to configure, monitor, and troubleshoot Junos OS security technologies on SRX Series devices. Designed for networking professionals with intermediate knowledge, it covers IDP, IPsec VPNs, Juniper ATP Cloud, high availability clustering, and more. Earning JNCIS-SEC demonstrates your expertise in securing modern networks with Juniper solutions.
Exam formatMultiple-choice
Duration90 minutes
DeliveryPearson VUE
Free questions725
Content last reviewed 30 July 2026 · Up to date
The certification
What JN0-336 proves, and what it asks of you
What this certification covers, who it is written for, and what the exam itself looks like on the day.
7domains
32objectives
193concepts
What it is
What this certification is
What it validates, who it is written for, and the experience it assumes.
About this certification
The JNCIS-SEC certification is the specialist-level credential in the Juniper Security track, designed for networking professionals with intermediate knowledge of Junos OS for SRX Series devices. The written exam verifies your understanding of security technologies and related platform configuration and troubleshooting skills, ensuring you can effectively secure networks using Juniper solutions.
This certification covers a broad range of security topics, including Intrusion Detection and Prevention (IDP), IPsec VPNs, Juniper Advanced Threat Prevention (ATP) Cloud, high availability clustering, identity-aware security policies, SSL proxy, and Junos Space Security Director. By earning JNCIS-SEC, you demonstrate your ability to implement and manage robust security measures in enterprise environments.
Who it’s for
This certification is for networking professionals with intermediate knowledge of Junos OS for SRX Series devices who are responsible for designing, implementing, and troubleshooting security solutions. It is ideal for security engineers, network engineers, and administrators who work with Juniper security products in enterprise or service provider environments. Candidates should have hands-on experience with Junos OS security features and a solid understanding of network security concepts. The certification validates your ability to configure and manage security policies, VPNs, and advanced threat prevention solutions.
Recommended experience
Intermediate knowledge of Junos OS for SRX Series devices and hands-on experience with security technologies. Understanding of network security concepts and best practices; Experience configuring and troubleshooting Junos OS security features; Familiarity with SRX Series devices and their security capabilities; Knowledge of VPN technologies, IDP, and high availability clustering
The syllabus
What you’ll learn
Every domain and objective Juniper Networks measures, with the weight they carry on the exam.
The official Juniper Networks exam outline · checked 30 July 2026 · See the source
Intrusion Detection and Prevention (IDP)
- IDP database management
- IDP policy
- Configure, monitor, or troubleshoot IDP
IPsec VPN
- IPsec tunnel establishment
- IPsec traffic processing
- IPsec site-to-site VPNs
- Juniper Secure Connect
- Configure, monitor, or troubleshoot IPsec VPNs
Juniper Advanced Threat Prevention (ATP) Cloud
- Supported files
- Components
- Security feeds
- Traffic remediation
- Workflow
- Encrypted Traffic Insights (ETI)
- DNS and IoT security
- Adaptive threat profiling
- Configure, monitor, or troubleshoot Juniper ATP Cloud
High Availability (HA) Clustering
- HA features and characteristics
- Deployment requirements and considerations
- Chassis cluster characteristics and operation
- Real-time objects and state synchronization
- Configure, monitor, or troubleshoot clustering
Identity-Aware Security Policies
- Juniper Identity Management Service (JIMS)
- Ports and protocols
- Data flow
- Configure, monitor, or troubleshoot identity-aware security policies
SSL Proxy
- Certificates
- Client and server protection
- Configure, monitor, or troubleshoot SSL proxy
Security Director
- Deployment options
- Onboarding devices
- Security policies management
On the day
The exam itself
Everything Juniper Networks publishes about sitting it, and nothing we inferred.
Prerequisites
JNCIA-SEC (Security, Associate) is required.
Exam codeJN0-336
CertificationJuniper Networks Certified Specialist, Security (JNCIS-SEC)
Exam formatMultiple-choice
Duration90 minutes
Questions65 questions
DeliveryPearson VUE
LanguagesEnglish
After you pass
Where this credential goes next
The path Juniper Networks lays out, how the credential is kept, and where to book.
Step-by-step path to Juniper Networks Certified Specialist, Security (JNCIS-SEC)
PrerequisiteJNCIA-SEC (Security, Associate) is required.
Credential earnedJuniper Networks Certified Specialist, Security (JNCIS-SEC) Certification Renewal and maintenance
Juniper certifications are valid for three years. Recertification options are available through the Juniper recertification program. Stay current with the latest technologies and maintain your certification.
Learn more about renewal requirements Lifecycle status
This certification is currently active and available. Juniper Networks maintains this certification to validate current skills and industry relevance.
Exam status: ActiveMaintained by Juniper Networks
Exam registration
Register for the exam through Pearson VUE, Juniper Networks’s authorized testing partner.
Schedule your examVisit the official Juniper Networks certification page for exam policies and requirements.
View the official pageYour coach
And when you are serious, your coach Pip takes over
Your coach in the app reads what you have answered with the book closed and tells you one thing to do tonight. It will not count an answer you gave with the page open, and it will tell you when you are not ready.
See how the coach worksBefore you book
Questions people ask
How does JNCIS-SEC relate to the other certifications in the Security track?
JNCIS-SEC is the specialist-level certification in the Security track, which also includes JNCIA-SEC (Associate), JNCIP-SEC (Professional), and JNCIE-SEC (Expert). You must earn JNCIA-SEC before attempting JNCIS-SEC.
Is there a hands-on lab component in the JNCIS-SEC exam?
No, the JNCIS-SEC exam is a written exam consisting of 65 multiple-choice questions. It does not include a hands-on lab component.
What is the retake policy for the JNCIS-SEC exam?
Juniper's retake policy requires a waiting period between attempts. You must wait at least 24 hours after a failed attempt before retaking the exam. Subsequent attempts require a 14-day waiting period.
Can I recertify JNCIS-SEC by passing a higher-level exam?
Yes, passing the JNCIP-SEC exam (JN0-335) will automatically recertify your JNCIS-SEC certification.
What job roles does the JNCIS-SEC certification map to?
JNCIS-SEC is designed for security engineers, network engineers, and administrators who work with Juniper security products, particularly SRX Series devices.
Are there any regional restrictions for taking the JNCIS-SEC exam?
The exam is available globally through Pearson VUE, both online and at test centers. However, the exam is only offered in English.
Information freshness · Content last reviewed on 2026-07-30 Up to date
Practice free questions 725 questions, free, no account needed.
The curriculum
The whole exam, mapped and written
Every domain, every objective, and every concept Juniper Networks measures — each one written out.
7domains
32objectives
193concepts
159free pages
The domains, and what sits inside them
Every objective below is a page you can open and practise now, without an account.
The official Juniper Networks exam outline · checked 30 July 2026 · See the source
1Intrusion Detection and Prevention (IDP)72 questions
2IPsec VPN118 questions
3Juniper Advanced Threat Prevention (ATP) Cloud222 questions
Supported files4 concepts · 4 pagesOpen →Components4 concepts · 5 pagesOpen →Security feeds6 concepts · 5 pagesOpen →Traffic remediation6 concepts · 6 pagesOpen →Workflow6 concepts · 5 pagesOpen →Encrypted Traffic Insights (ETI)5 concepts · 6 pagesOpen →DNS and IoT security7 concepts · 6 pagesOpen →Adaptive threat profiling6 concepts · 6 pagesOpen →Configure, monitor, or troubleshoot Juniper ATP Cloud7 concepts · 5 pagesOpen →
4High Availability (HA) Clustering100 questions
HA features and characteristics9 concepts · 6 pagesOpen →Deployment requirements and considerations6 concepts · 3 pagesOpen →Chassis cluster characteristics and operation9 concepts · 5 pagesOpen →Real-time objects and state synchronization7 concepts · 6 pagesOpen →Configure, monitor, or troubleshoot clustering3 concepts · 2 pagesOpen →
5Identity-Aware Security Policies84 questions
6SSL Proxy68 questions
Not a table of contents
Every line on this map already opens
In front of every objective the practice pages are already there, free and without an account. This is one objective, opened.
IDP database management7 pagesOpen →
Free in front of it
32 questions on this objective, five to a page. Every range above is a real page, open now, with no account.
Reading the map is not the same as knowing the ground
The curriculum tells you what is on the exam. Proving you know it is a different job — and it is the one the closed-book run does.
Free questions
725 questions. No account, no card.
The whole bank is open. 5 questions to a page, every answer explained, and a discussion thread on each one.
725questions
159pages
32objectives
Freealways
Browse by domain
Every objective, and every page range, is a link — so you can pick up exactly where you left off.
1Intrusion Detection and Prevention (IDP)72 questions
2IPsec VPN118 questions
3Juniper Advanced Threat Prevention (ATP) Cloud222 questions
4High Availability (HA) Clustering100 questions
5Identity-Aware Security Policies84 questions
6SSL Proxy68 questions
What a practice page gives you
1Five to a page
Short enough to finish, long enough to matter.
2Every answer explained
Not only which one is right — why the others are wrong.
3A discussion on each
Ask, answer, and vote. Every question has its own thread.
A question, and the idea behind it
Every question comes from a concept
These are not trivia. Each one is written against a concept in the book, so when you get one wrong there is somewhere to go and find out why.
The visual book
See it once. Carry it into the exam.
The pages shown here come from our AI-900 book — an example of how each concept is written in plain language and, where the idea needs one, drawn as a full page you can take in at a glance.
193concepts
725free questions
Why a picture, and not another paragraph
Three reasons, and each one is a real finding rather than a slogan.
You can see it againThe whole idea at onceWhere it starts, what happens in the middle, what comes out, and the mistake to avoid.
Multimedia principle · MayerThe look-alikes sit togetherThe pairs the exam tests are drawn side by side, so the difference is seen, not told.
Dual coding · PaivioWhat one page is made of
You are never asked to read a poster here — only to see how one is built. After that, every other page is legible at a glance.
1A numbered strip on top
The idea as a sequence, followed with a finger before a word is read.
2Panels for the parts
What it is, how the machine learns it, when it is the right tool.
3The trap, framed
The distinction the exam tests, given its own box instead of buried in prose.
4One line at the bottom
The sentence to carry into the exam room.
Open book, on purpose
Answer it with the picture beside you
This is the part that teaches. The illustration and the written explanation stay where they are while you work, so a scenario stops being a memory test and becomes something you can simply look at.
It teaches · it does not count
A smartphone uses AI to unlock when the owner looks at the camera. Which AI capability is being used?
AImage classification
BFacial recognition
COptical character recognition
DObject detection
Look at the five steps. Detect finds a face, align straightens it, encode turns it into numbers, search compares it with a stored face, and decide answers one question: is this the same person? Classification would only say “a face”. Detection would only draw a box. Neither decides whose.
Then the page shuts, and it starts counting
The same questions come back with the book closed — that run is the one that counts. After it, your coach picks one thing for tonight, sized to the time you have, and brings pages back before you lose them.
Testing effect · Roediger & Karpicke 2006 · spacing effect · Cepeda et al. 2006
Official resources
Straight from Juniper Networks
Where the exam is defined, scheduled and scored.
1official link
193concepts mapped
The source
Juniper Networks’s own pages
We link to them rather than repeat them, so nothing here goes stale behind them.
Checked against the source
Every objective on the official Juniper Networks outline already has questions here
We build from the official skills outline, not from a summary of it — 32 objectives, 193 concepts written under them, and free questions against every one. When Juniper Networks changes the outline, this page changes with it.
32objectives on the outline→193concepts written→725free questions
An official page tells you what will be asked. It cannot tell you what you will get right.
That is the only question worth answering the night before, and no link answers it. You answer it by taking the questions with the book closed, and seeing what comes back.