Exam Code: JN0-421
Exam Name: Automation and DevOps, Specialist (JNCIS-DevOps)
Certification Provider: Juniper
Corresponding Certification: JNCIS-DevOps

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Updated: Sep 22, 2026

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Juniper JN0-421 Exam Overview:

Certification Vendor:	Juniper Networks
Exam Name:	Juniper Automation and DevOps, Specialist (JNCIS-DevOps)
Exam Number:	JN0-421
Exam Duration:	90 minutes
Exam Format:	Multiple response, Scenario-based questions, Multiple choice
Available Languages:	English
Exam Price:	$300 USD (may vary by region)
Related Certifications:	JNCIA-DevOps JNCIS-DevOps
Certificate Validity Period:	3 years
Real Exam Qty:	60-65
Recommended Training:	Juniper Networks Training (Automation & DevOps)
Exam Registration:	Juniper Certifications Registration Pearson VUE Juniper Exams
Sample Questions:	Juniper JN0-421 Sample Questions
Exam Way:	Online proctored or in-person test center via Pearson VUE
Pre Condition:	No formal prerequisite, but Juniper recommends JNCIA-DevOps knowledge before attempting this exam.
Official Syllabus URL:	https://www.juniper.net/us/en/training/certification/certification-tracks/automation-and-devops-track.html

Juniper JN0-421: Automation and DevOps, Specialist (JNCIS-DevOps) exam is designed to test a candidate's knowledge and skills in automation and DevOps practices. JN0-421 exam is intended for individuals who have experience working with Juniper Networks devices and want to enhance their skills in automation and DevOps. The JN0-421 exam is one of the most popular Juniper certification exams, and passing it can open up a wide range of career opportunities for professionals.

Reference: https://www.juniper.net/us/en/training/certification/certification-tracks/devops?tab=jncis-devops

The JN0-421 certification exam covers a broad range of topics related to automation and DevOps, including Junos automation scripting, Junos automation tools, network automation, and continuous integration and delivery (CI/CD). JN0-421 exam is designed to test the candidate's knowledge and skills in these areas and to ensure that they have a deep understanding of the Juniper Networks automation solutions. Passing the JN0-421 exam demonstrates that the candidate has the expertise and ability to design, implement, and troubleshoot automation solutions in a Juniper Networks environment, making them a valuable asset to any organization that utilizes Juniper Networks products.

Juniper JN0-421 Exam Syllabus Topics:

Section	Objectives
Scripting and Tooling	- Git and version control basics for automation workflows - Python for network automation - Ansible automation with Junos devices
Juniper Platforms and Junos Automation	- Junos OS automation features - Commit scripts and event scripts
Automation Fundamentals	- DevOps principles and workflows - Automation concepts and use cases in networking
CI/CD and Operational Automation	- CI/CD pipelines in network automation - Testing and validation of automation workflows
APIs and Data Formats	- REST APIs and Junos REST API - Data formats (JSON, XML, YAML)

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