- Requirements at a Glance
- The Prerequisite: JNCIA-DevOps
- Exam Format and Language
- Skills the Exam Expects You to Bring
- Registration, Fees and Program Branding
- Test Center and OnVUE Conditions
- Scoring and Provisional Results
- Which Exam Version You Must Prepare For
- Sequencing Your Preparation by Domain
- Staying Qualified: Renewal and Expiration
- Who This Credential Serves
- Frequently Asked Questions
- JNCIA-DevOps is the prerequisite certification; recommended training is optional, and associate study does not replace the specialist objectives.
- The current exam is JN0-423: 65 multiple-choice questions in 90 minutes, in English, built on Junos OS 24.4.
- The standard specialist-exam voucher is USD 300, with scheduling handled through Alpine CertMetrics using your hpe.com account.
- The certification is active for three years; an expired credential means restarting at the beginning of the track.
Requirements at a Glance
The Juniper Networks Certified Specialist, Automation and DevOps (JNCIS-DevOps) credential is a specialist-level certification in Juniper's automation and DevOps track. Its requirements are refreshingly short compared with many vendor programs: hold the prerequisite certification, pass one written exam, and keep the credential current. There is no mandatory classroom course, no required years of experience, and no application review.
If you are still orienting yourself on what the credential represents, start with What Is JNCIS-DevOps Certification? and then return here for the qualification mechanics.
| Requirement | What the Issuer Specifies |
|---|---|
| Prerequisite certification | JNCIA-DevOps |
| Recommended training | Optional, not mandatory |
| Current exam | JN0-423 (replaced JN0-422) |
| Format | 65 multiple-choice questions, 90 minutes, English |
| Software baseline | Junos OS 24.4 |
| Voucher price | USD 300 (standard specialist-exam voucher) |
| Validity | Three years |
The Prerequisite: JNCIA-DevOps
The gating requirement is the associate-level JNCIA-DevOps certification. Treat it as a true entry condition rather than a suggestion: the specialist track builds on it. Just as important, the reverse is not true. Holding the associate credential does not mean you have covered the specialist exam's objectives. The specialist blueprint goes deeper into areas such as gRPC and gNMI telemetry, YANG data modeling and Junos event scripting, so associate preparation does not replace the specialist objectives.
What "recommended training" really means
Juniper lists training as recommended, not required. You can sit the exam without ever enrolling in a course. That said, the course catalog matters in one specific place: renewal. The courses that qualify for the renewal route (covered below) are also useful preparation material. For a broader look at training options, see JNCIS-DevOps Training.
Exam Format and Language
The verified assessment for this certification is a written, multiple-choice examination. Hands-on lab work is valuable for learning, since you will understand Ansible playbooks or Junos scripts far better after running them, but you are not asked to configure anything live during the exam.
- Exam code: JN0-423
- Questions: 65 multiple-choice
- Time limit: 90 minutes
- Language: English
- Junos baseline: Junos OS 24.4
Ninety minutes for 65 questions leaves roughly a minute and a half per item, which suits questions that ask you to recognize correct syntax, identify the right tool for a scenario, or reason about what a script or playbook will do. For a candid view of how demanding that is, read How Hard Is the JNCIS-DevOps Exam?. The split between scored and unscored questions has not been verified, so do not rely on claims about how many items actually count.
Skills the Exam Expects You to Bring
There is no formal experience requirement, but the exam objectives presuppose working knowledge of specific technologies. The official overview also identifies Python and PyEZ as part of the expected skill set. Below is how the five published domains translate into concrete things to master. Percentage weights for the domains are unpublished, so there is no verified "highest-weighted" domain; prepare all five seriously. For deeper coverage, see JNCIS-DevOps Exam Domains: Complete Guide to All 5 Content Areas.
Domain 1: Platform Automation Overview
You need to understand how automation reaches a Junos device through different mechanisms.
- MGD, the management process, and how automation interacts with it
- Terraform for infrastructure-style provisioning
- The Juniper Extension Toolkit (JET) and the JSD service process
- Python and PyEZ as the scripting foundation
Domain 2: gRPC
This domain covers gRPC used for both automation and telemetry.
- Protocol buffers and the gRPC protocol itself
- gNMI and OpenConfig
- Sensor paths for streaming telemetry
- gNMIc as a client tool
- The TIG stack (Telegraf, InfluxDB, Grafana) for collecting and visualizing telemetry
Domain 3: Ansible
Know what Ansible-supported files look like and how a Junos-focused workflow is assembled.
- Playbooks and the files that support them
- Ansible Vault for protecting secrets
- JSNAPy for snapshot-based verification
- Jinja2 templates for generating configuration
Domain 4: Junos Automation Scripts
Understand the concepts, benefits and operation of the on-box script types.
- Commit scripts
- Op scripts
- Event scripts
- SNMP scripts
Domain 5: YANG
Be comfortable reading and reasoning about data models.
- YANG implementation on Junos
- OpenConfig configuration models
- YANG syntax and data types
Registration, Fees and Program Branding
Juniper's certification program was renamed the HPE Networking Certification Program on September 15, 2026. The JNCIS-DevOps credential itself is unchanged, but the rebranding shows up in the registration workflow. Current issuer instructions direct candidates to schedule, manage and launch written exams through Alpine CertMetrics using their hpe.com account. Pearson VUE remains the delivery provider for both test-center and OnVUE (online proctored) appointments.
The standard specialist-exam voucher costs USD 300. No separate member versus non-member price schedule was identified, so do not budget around a discount you cannot confirm. For a fuller treatment of retake and bundled costs, see JNCIS-DevOps Certification Cost: Complete Pricing Breakdown, and for timing questions see JNCIS-DevOps Exam Dates: Testing Windows, Deadlines & Scheduling.
Test Center and OnVUE Conditions
You can test at a Pearson VUE center or remotely through OnVUE. Remote delivery is convenient but comes with strict conditions you must satisfy to qualify to sit the exam on the day:
- Identity verification before the session starts
- Equipment checks (computer, webcam, microphone, network)
- Room checks to confirm a clean, private testing space
- No unauthorized books, notes or other reference materials
Juniper also publishes exam-security rules. Using recalled live-exam content is a violation, and legitimate preparation relies on original practice questions rather than leaked items. If you want original practice material, you can try the practice tests on the main site, which are independent study resources and are not officially sponsored by Juniper or HPE.
Scoring and Provisional Results
Juniper does not publish a numerical passing score. The score appears on your score report, and initial passing results are provisional. That means you should not treat the on-screen result as the final word until the issuer confirms it. Be wary of any source that quotes a specific cut score as fact; a practice assessment's passing threshold must never be presented as the live exam's cut score. Aggregate candidate pass rates have not been verified either. For the current picture of what is and is not known, see JNCIS-DevOps Passing Score: Exactly What You Need to Pass and JNCIS-DevOps Pass Rate: What the Data Shows.
Which Exam Version You Must Prepare For
Version confusion is the most common way candidates waste study time. The timeline is simple:
| Item | Status |
|---|---|
| JN0-422 | Retired October 5, 2025 |
| JN0-423 | Launched October 6, 2025; current exam |
| Junos baseline | Junos OS 24.4 |
Do not blend older exam codes, Junos 21.3 references or cached outlines into your preparation. If a study resource references JN0-422 or an older Junos release, treat it with caution and verify each topic against the current official objectives before relying on it. Our JNCIS-DevOps Study Guide is organized around the current objectives.
Sequencing Your Preparation by Domain
Since domain weights are unpublished, a balanced plan that gives every domain real attention is the safest approach. One reasonable sequencing starts with the concepts that the later domains depend on:
Platform Automation Overview
- Map MGD, JET/JSD and Terraform to where each fits
- Refresh Python and PyEZ basics, since later domains reuse them
YANG
- Learn syntax and data types before gRPC, since gNMI and OpenConfig lean on models
- Read OpenConfig configuration models alongside Junos implementations
gRPC
- Protocol buffers, gNMI, sensor paths and gNMIc
- Walk through the TIG stack data flow end to end
Ansible and Junos Automation Scripts
- Build a playbook with Jinja2 templates, Vault and JSNAPy checks
- Compare commit, op, event and SNMP scripts by trigger and purpose
Place YANG before gRPC because telemetry and configuration over gNMI are easier to reason about once you understand the models underneath. Finish with a full pass of original practice questions, and keep the JNCIS-DevOps Cheat Sheet handy for last-minute review.
Staying Qualified: Renewal and Expiration
Meeting the requirements once is not the end. The certification is active for three years. To keep it current, renew before it expires through either:
- An eligible examination, or
- A designated instructor-led or On-Demand course
For the specialist-level course route, the renewal table lists Junos Platform Automation and NetDevOps or Advanced Junos Platform Automation and NetDevOps. Only one eligible course is required. Open Learning does not qualify for this route, so do not assume free or self-paced Open Learning content will extend your credential.
Key Takeaway
Put your expiration date on your calendar the day you pass. If the credential lapses, you must restart at the beginning of the track rather than simply retaking the specialist exam.
Who This Credential Serves
JNCIS-DevOps is aimed at network engineers and automation practitioners who work with Junos devices and want to demonstrate they can automate them with real tooling: Ansible, Python and PyEZ, on-box scripts, streaming telemetry and model-driven interfaces. Employers running Juniper-heavy environments, including service providers, enterprises and managed network providers, value that blend of routing knowledge and automation skill. For market context, see JNCIS-DevOps Jobs, JNCIS-DevOps Salary Guide and Is the JNCIS-DevOps Certification Worth It?.
Frequently Asked Questions
Yes. JNCIA-DevOps is the prerequisite certification for the specialist credential. Recommended training is optional, but the prerequisite certification is not. Holding it does not replace studying the specialist objectives.
No. Training is recommended but not required, and no minimum work experience is specified. The requirement is the prerequisite certification plus a passing result on the written exam.
Current issuer instructions direct you to schedule, manage and launch written exams through Alpine CertMetrics using your hpe.com account. Pearson VUE delivers the exam at test centers and through OnVUE. The voucher is USD 300.
The issuer does not publish a numerical passing score. It appears on your score report, and initial passing results are provisional. Treat any quoted cut score from an unofficial source with skepticism.
It is active for three years. Renew before expiration through an eligible exam or a designated instructor-led or On-Demand course; Open Learning does not qualify. If it expires, you must restart at the beginning of the track.