Automation and DevOps, Specialist (JNCIS-DevOps): JN0-420 Exam Premium File as PDF & Test Engine
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Last Updated: Sep 16, 2026
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The Juniper Automation and DevOps, Specialist (JNCIS-DevOps) exam has a reputation for tripping up even experienced professionals. Fast2test breaks it down into 65 practice questions with verified answers, so you walk into JN0-420 in 2026 knowing exactly what to expect.
Juniper JN0-420 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Juniper Automation and DevOps, Specialist (JNCIS-DevOps) |
| Exam Number: | JN0-420 |
| Real Exam Qty: | Approximately 65 |
| Related Certifications: | JNCIA-Junos JNCIA-DevOps |
| Exam Format: | Multiple choice, Multiple response |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Exam Price: | USD 200 |
| Certificate Validity Period: | 3 years |
| Recommended Training: | Juniper Networks Training and Certification Juniper Learning Portal |
| Exam Registration: | Pearson VUE Juniper Exams Juniper Certification Portal |
| Sample Questions: | Juniper JN0-420 Sample Questions |
| Exam Way: | Pearson VUE proctored exam (online or test center) |
| Pre Condition: | No strict prerequisites; recommended knowledge equivalent to JNCIA-Junos or JNCIA-DevOps level understanding |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification.html |
Juniper JN0-420 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Verification and Troubleshooting | - Automated validation of network configurations - Troubleshooting automation scripts and workflows |
| Topic 2: CI/CD and DevOps Practices | - Network automation pipelines and version control - Continuous integration and delivery concepts |
| Topic 3: Junos Automation Interfaces | - Junos automation tools and operational commands - NETCONF, REST APIs, XML and JSON data formats |
| Topic 4: Automation Fundamentals | - Automation concepts and use cases in networking - DevOps principles and workflows |
| Topic 5: Automation Frameworks and Orchestration | - Ansible for Junos automation - Configuration management and orchestration tools |
| Topic 6: Scripting and Programmability | - Junos PyEZ library usage - Python for network automation |
Juniper Automation and DevOps, Specialist (JNCIS-DevOps) Exam FAQs and Straight Answers
The JN0-420 exam, officially titled Automation and DevOps, Specialist (JNCIS-DevOps), is the qualifying test for the Juniper Automation and DevOps, Specialist (JNCIS-DevOps) certification from Juniper Networks, a credential at the Specialist level. Passing it proves you have the skills employers look for in certified professionals, and it can also support progress toward related credentials such as JNCIA-Junos, JNCIA-DevOps.
The Juniper Automation and DevOps, Specialist (JNCIS-DevOps) exam gives you 90 minutes to work through Approximately 65 questions. That is a steady pace with little room for second-guessing, so train yourself to read each question once, flag the difficult ones, and keep moving. Before exam day, sit at least two full timed sessions in the Fast2test test engine — when the clock feels familiar, it stops being a threat.
No strict prerequisites; recommended knowledge equivalent to JNCIA-Junos or JNCIA-DevOps level understanding Eligibility rules can change over time, so before you register, confirm the latest requirements on the official exam page: Juniper Networks JN0-420 exam overview.
You can book your JN0-420 exam through any of these official registration channels:
The exam is delivered as Pearson VUE proctored exam (online or test center), so you can pick the option that fits your schedule when you book.
Juniper Networks recommends the following training for Juniper Automation and DevOps, Specialist (JNCIS-DevOps) candidates:
Pair that training with the 65 practice questions from Fast2test and you can check your readiness topic by topic before exam day.
Yes. Fast2test offers a free PDF demo for the Juniper Automation and DevOps, Specialist (JNCIS-DevOps) exam so you can judge the quality of our questions and answers before paying anything. Every purchase also comes with 365 days of free updates, and once that period expires you can extend your update service at a 50% discount.
Your purchase is protected by a 100% money-back guarantee. If you sit the corresponding JN0-420 exam within 60 days of buying and do not pass, send us a scan of your exam enrollment slip together with your official Score Report (PDF) within 2 days of the exam date — the candidate name must match the payer's name — and we will process your full refund within 7 days. Please note that exams taken within 3 days of purchase, materials downloaded without ever sitting the exam, free products, and expired orders are not covered. If you would rather not have a refund, you can exchange your order for two exam products of equal value, free of charge, and keep the update service on your original purchase.
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The Juniper Automation and DevOps, Specialist (JNCIS-DevOps) syllabus is organized into 6 domains. The main areas include Automation Fundamentals, Verification and Troubleshooting, and Scripting and Programmability. Scroll up to the Exam Topics section above for the complete, current outline before you plan your study schedule.
Juniper Automation and DevOps, Specialist (JNCIS-DevOps) Sample Questions:
In a Python commit script, which object provides the post-inheritance candidate configuration?
- A. Commit-Script-Input
- B. Candidate_Configuration
- C. Checkout_Configuration
- D. Junos_Configuration
Correct Answer: D 🗳️
Explanation: Only visible for Fast2test members. You can sign-up / login (it's free).
What are two message types that compose the message layer of the Juniper NETCONF implementation? (Choose two?)
- A. <lock>
- B. <get>
- C. <rpc>
- D. <rpc-reply>
Correct Answer: C,D 🗳️
What are two attributes of the jsd JET service process? (Choose two)
- A. It executes one API request per session
- B. It executes APIs from multiple sessions in parallel
- C. It supports only one client session at a time
- D. It creates a separate thread to service JET application requests
Correct Answer: B,D 🗳️
Explanation: Only visible for Fast2test members. You can sign-up / login (it's free).
What are three supported languages for operational scripts on Junos devices? (Choose three)
- A. SLAX
- B. XSLT
- C. PHP
- D. Python
- E. Java
Correct Answer: A,B,D 🗳️
Explanation: Only visible for Fast2test members. You can sign-up / login (it's free).
Which data serialization is used between RubyEZ and a Junos device?
- A. automated CLI
- B. OpenConfig
- C. XML
- D. SNMP
Correct Answer: B 🗳️
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