Study with JN0-421 Actual Test Questions
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Last Updated: Aug 28, 2026
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Juniper JN0-421 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Automation and DevOps, Specialist (JNCIS-DevOps) |
| Exam Number: | JN0-421 |
| Real Exam Qty: | 65 |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Related Certifications: | Juniper Networks Certified Specialist, Automation and DevOps (JNCIS-DevOps) |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple Choice |
| Sample Questions: | Juniper JN0-421 Sample Questions |
| Exam Way: | Pearson VUE testing centers and Pearson VUE online proctored delivery. |
| Pre Condition: | Valid JNCIA-DevOps certification is required. |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/tracks/devops/jncis-devops.html |
Juniper JN0-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Automation Frameworks | - Salt for Junos Automation
|
| YANG and OpenConfig | - Data Modeling and Open Standards
|
| Python Automation | - Python Tools for Junos Automation
|
| Data Serialization and Templating | - Serialization Formats and Templates
|
| Junos Automation Scripts | - Automation Script Concepts
|
| Platform Automation Overview | - Junos Platform Automation Concepts
|
| NETCONF and XML API | - Automation Access Methods
|
Frequently Asked Questions About Juniper Automation and DevOps, Specialist (JNCIS-DevOps)
The JN0-421 exam leads to the JNCIS-DevOps certification, a Specialist-level credential from Juniper. It validates the skills measured by the Juniper Automation and DevOps, Specialist (JNCIS-DevOps) syllabus and is a recognized step for IT professionals building their careers, and it sits alongside related credentials such as Juniper Networks Certified Specialist, Automation and DevOps (JNCIS-DevOps).
The Juniper Automation and DevOps, Specialist (JNCIS-DevOps) exam includes 65 questions and gives you 90 minutes to complete them. That works out to a fairly tight pace, so reading each question carefully but decisively matters more than perfectionism. If a question stalls you, flag it and move on; banking the easier points first keeps time pressure from snowballing near the end. Before test day, run at least one full timed session with the Actualtests4sure practice test so the rhythm feels familiar rather than rushed.
Valid JNCIA-DevOps certification is required. Because Juniper may adjust its policies over time, we recommend confirming the latest requirements on the official exam page (official exam page) before you register.
Yes. Actualtests4sure offers a free PDF demo of the Juniper Automation and DevOps, Specialist (JNCIS-DevOps) material, so you can review the question style and answer quality before making a decision. Every purchase also includes 365 days of free updates, and after that period you can extend your updates at a 50% discount, which keeps your preparation current through 2026 and beyond.
If you take the Juniper Automation and DevOps, Specialist (JNCIS-DevOps) exam within 60 days of your purchase and do not pass, Actualtests4sure offers a full refund under its Money Back Guarantee. To apply, send a scanned copy of your exam enrollment slip together with your official Score Report in PDF format within 2 days of the exam date, and your claim will be processed within 7 days. The guarantee applies only to the corresponding exam: attempts made within 3 days of purchase, exams downloaded but never actually taken, free materials, and expired orders are not eligible, and the candidate name must match the purchaser name. If you would rather not take a refund, you can exchange your product for two additional exam preparation products of equal value and keep the update service on your original purchase. Delivery itself is instant: your product is available for download right after payment and is also sent to your email within one minute, and if it has not arrived within 2 hours, contact our support team. There is no limit on how many computers you can install it on.
The Juniper Automation and DevOps, Specialist (JNCIS-DevOps) syllabus is divided into 7 main domains, including Data Serialization and Templating, Automation Frameworks, YANG and OpenConfig. Each domain carries a different share of the total score, so knowing where the weight sits helps you allocate your study time wisely. You will find the complete, up-to-date outline in the Exam Topics section above.
Juniper Automation and DevOps, Specialist (JNCIS-DevOps) Sample Questions:
Question 1
Which format does an Ansible playbook use?
A. XML
B. JSON
C. YAML
D. CSV
Question 2
Click the Exhibit button.
Exhibit:
Referring to the exhibit, the configuration components are displayed in which format?
A. YANG
B. XML
C. JSON
D. YAML
Question 3
Click the Exhibit button.
Exhibit:
Your manager asks you to troubleshoot an Ansible problem when logging into a Junos device. You notice the Ansible play in question has a vars_files argument that calls the variables.yml entry file. The contents of that file are displayed in the exhibit.
What is happening in this scenario?
A. The variables.yml file is not actually a YAML file
B. The file is an SSH key
C. The file is encrypted with ansible-vault
D. The file is encrypted with ansible
Question 4
You want to implement a function that is available in the Junos OS , but not defined in a standard model.
Which statement would you use with YANG to accomplish this task?
A. deviation
B. augment
C. case
D. choice
Question 5
Click the Exhibit button.
Exhibit:
You are validating access to a Junos device using NETCONF and receive the response shown below.
Referring to the exhibit, how would you solve this issue?
A. Enable outbound-ssh with services netconf under the SSH configuration hierarchy
B. Enable protocol-version v1 under the SSH configuration hierarchy
C. Enable traceoptions under the NETCONF configuration hierarchy
D. Enable ssh under the NETCONF configuration hierarchy
Solutions:
| Question 1 Answer: C | Question 2 Answer: C | Question 3 Answer: C | Question 4 Answer: D | Question 5 Answer: D |
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