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 Associate, Junos
The Juniper Networks Certified Associate, Junos (JNCIA-Junos) certification validates your understanding of the core functionality of the Junos OS, from networking fundamentals to routing policy and firewall filters. Designed for networking professionals with beginner-intermediate knowledge, it serves as the baseline for multiple Juniper certification tracks, including Enterprise and Service Provider Routing and Switching. Earning this credential demonstrates you have the foundational skills to configure, monitor, and troubleshoot Junos devices.
Exam formatMultiple-choice questions
Duration90 minutes
DeliveryPearson VUE
Free questions827
Content last reviewed 30 July 2026 · Up to date
The certification
What JN0-105 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
45objectives
265concepts
What it is
What this certification is
What it validates, who it is written for, and the experience it assumes.
About this certification
The Juniper Networks Certified Associate, Junos (JNCIA-Junos) certification is the entry-level credential for networking professionals who work with Junos OS. It verifies your understanding of the core functionality of the Junos operating system, covering networking fundamentals, Junos OS architecture, user interfaces, configuration basics, operational monitoring, routing fundamentals, and routing policy and firewall filters. The written exam is designed for individuals with beginner-intermediate networking knowledge who want to establish a solid foundation in Juniper technologies.
Because JNCIA-Junos provides a core understanding of the Junos OS, it serves as the baseline certification for multiple certification tracks, including the Enterprise Routing and Switching track and the Service Provider Routing and Switching track. Earning this certification demonstrates that you can configure and monitor basic Junos devices, understand routing concepts, and apply routing policies and firewall filters. It is the first step toward more advanced Juniper certifications and a valuable credential for network engineers, administrators, and support professionals working in Juniper environments.
Who it’s for
This certification is for networking professionals with beginner-intermediate knowledge of networking who want to validate their understanding of the Junos OS. It is ideal for network engineers, network administrators, and support professionals who work with or plan to work with Juniper Networks equipment and need a foundational credential in Junos. Candidates should be comfortable with basic networking concepts such as IP addressing, Ethernet, and routing, and be ready to learn the Junos CLI, configuration management, and operational monitoring. This certification is also a prerequisite for more advanced Juniper certifications in the Enterprise and Service Provider tracks.
Recommended experience
Beginner-intermediate knowledge of networking is recommended, along with familiarity with basic networking concepts such as IP addressing, Ethernet, and routing. Understanding of fundamental networking concepts, including IP addressing, subnetting, and Ethernet; Basic knowledge of routing and switching concepts; Familiarity with the Junos OS CLI and configuration basics is helpful but not required
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
Networking Fundamentals
- Collision and Broadcast Domains
- Router and Switch Functions
- Ethernet Networking
- Layer 2 and Layer 3 Addressing
- IPv4 and IPv6 Addressing
- Subnetting
- Binary-to-Decimal Conversion
- Longest-Match Routing
- Class of Service (CoS)
- Network Protocol Types
Junos OS Fundamentals
- Junos Software Architecture
- Control and Forwarding Planes
- Routing Engine and Packet Forwarding Engine
- Transit Traffic Processing
- Exception Traffic Processing
User Interfaces
- CLI Functionality, Modes and Navigation
- CLI Help
- Output Filtering
- Active and Candidate Configurations
- Configuration Reverting and Loading
- J-Web Interface
Configuration Basics
- Initial System Setup
- User and Access Management
- Network Configuration
- Monitoring and Logging
- Configuration Management
Operational Monitoring and Maintenance
- Show and Monitor Commands
- Interface Statistics and Errors
- Network Troubleshooting Tools
- Junos OS Installation and Upgrades
- Device Power Management
- Root Password Recovery
Routing Fundamentals
- Packet Forwarding
- Routing and Forwarding Tables
- Route Preference
- Routing Instances
- Static Routing
- Dynamic Routing Protocol Advantages
Routing Policy and Firewall Filters
- Default Routing Policies
- Import and Export Policies
- Policy Evaluation Flow
- Policy Structure and Terms
- Match Criteria and Actions
- Firewall Filters
- Unicast Reverse-Path-Forwarding (RPF)
On the day
The exam itself
Everything Juniper Networks publishes about sitting it, and nothing we inferred.
Prerequisites
No mandatory prerequisites — this certification has no required predecessor exam or credential.
Exam codeJN0-105
CertificationJuniper Networks Certified Associate, Junos
Exam formatMultiple-choice questions
Duration90 minutes
Questions65 questions
DeliveryPearson VUE
LanguagesEnglish
Certification levelAssociate
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 Associate, Junos
Credential earnedJuniper Networks Certified Associate, Junos Associate level certification Renewal and maintenance
Juniper certifications are valid for three years. Recertification is required to maintain the credential. 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
Is the JNCIA-Junos certification a prerequisite for higher-level Juniper certifications?
Yes. JNCIA-Junos serves as the baseline certification for the Enterprise Routing and Switching and Service Provider Routing and Switching tracks. It is a prerequisite for advanced certifications in those tracks, such as JNCIS-ENT and JNCIS-SP.
Can I take the JN0-105 exam online or do I need to go to a test center?
The exam is delivered by Pearson VUE and is available both online and at test centers. You can choose the option that works best for you when registering.
How soon will I receive my exam results?
Pass/fail status is available immediately after taking the exam. A detailed score report is not provided, only the pass/fail outcome.
What job roles does the JNCIA-Junos certification map to?
The JNCIA-Junos certification is designed for networking professionals with beginner-intermediate knowledge, including network engineers, network administrators, and support professionals who work with Junos OS-based devices.
Are there any hands-on lab components in the JN0-105 exam?
No. The JN0-105 exam consists of 65 multiple-choice questions. There is no hands-on lab component.
What is the retake policy for the JN0-105 exam?
Juniper Networks follows the retake policy of Pearson VUE. You must wait a specified period between attempts, typically 24 hours after the first failed attempt and 14 days for subsequent attempts. Check the Pearson VUE website for the most current policy.
Can I recertify by passing a higher-level Juniper exam?
Yes. Passing a higher-level exam in the same track, such as JNCIS-ENT or JNCIS-SP, will recertify your JNCIA-Junos certification. Juniper certifications are valid for three years, and recertification can be achieved by passing the current exam or a higher-level exam.
Information freshness · Content last reviewed on 2026-07-30 Up to date
Practice free questions 827 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
45objectives
265concepts
188free 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
1Networking Fundamentals201 questions
Collision and Broadcast Domains9 concepts · 5 pagesOpen →Router and Switch Functions3 concepts · 5 pagesOpen →Ethernet Networking6 concepts · 5 pagesOpen →Layer 2 and Layer 3 Addressing3 concepts · 5 pagesOpen →IPv4 and IPv6 Addressing11 concepts · 6 pagesOpen →Subnetting5 concepts · 4 pagesOpen →Binary-to-Decimal Conversion4 concepts · 5 pagesOpen →Longest-Match Routing5 concepts · 5 pagesOpen →Class of Service (CoS)4 concepts · 3 pagesOpen →Network Protocol Types4 concepts · 3 pagesOpen →
2Junos OS Fundamentals119 questions
3User Interfaces107 questions
CLI Functionality, Modes and Navigation3 concepts · 2 pagesOpen →CLI Help6 concepts · 4 pagesOpen →Output Filtering5 concepts · 4 pagesOpen →Active and Candidate Configurations6 concepts · 4 pagesOpen →Configuration Reverting and Loading8 concepts · 5 pagesOpen →J-Web Interface7 concepts · 6 pagesOpen →
4Configuration Basics81 questions
5Operational Monitoring and Maintenance122 questions
Show and Monitor Commands6 concepts · 4 pagesOpen →Interface Statistics and Errors5 concepts · 4 pagesOpen →Network Troubleshooting Tools8 concepts · 6 pagesOpen →Junos OS Installation and Upgrades6 concepts · 5 pagesOpen →Device Power Management4 concepts · 2 pagesOpen →Root Password Recovery7 concepts · 6 pagesOpen →
6Routing Fundamentals110 questions
7Routing Policy and Firewall Filters87 questions
Default Routing Policies3 concepts · 1 pagesOpen →Import and Export Policies9 concepts · 4 pagesOpen →Policy Evaluation Flow5 concepts · 3 pagesOpen →Policy Structure and Terms5 concepts · 2 pagesOpen →Match Criteria and Actions4 concepts · 3 pagesOpen →Firewall Filters6 concepts · 4 pagesOpen →Unicast Reverse-Path-Forwarding (RPF)5 concepts · 3 pagesOpen →
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.
Collision and Broadcast Domains5 pagesOpen →
Free in front of it
22 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
827 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.
827questions
188pages
45objectives
Freealways
Browse by domain
Every objective, and every page range, is a link — so you can pick up exactly where you left off.
1Networking Fundamentals201 questions
2Junos OS Fundamentals119 questions
3User Interfaces107 questions
4Configuration Basics81 questions
5Operational Monitoring and Maintenance122 questions
6Routing Fundamentals110 questions
7Routing Policy and Firewall Filters87 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.
265concepts
827free 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.
2official links
265concepts 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 — 45 objectives, 265 concepts written under them, and free questions against every one. When Juniper Networks changes the outline, this page changes with it.
45objectives on the outline→265concepts written→827free 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.