Last Updated: Aug 26, 2026
No. of Questions: 66 Questions & Answers with Testing Engine
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The JN0-421 exam covers a broad range of topics related to automation and DevOps, including automation tools, Python scripting, REST APIs, YAML, JSON, and DevOps methodologies. JN0-421 exam also covers advanced topics such as Juniper Contrail, orchestration, and continuous integration and delivery. Passing the JN0-421 exam demonstrates that an individual has the skills and knowledge necessary to automate Juniper networks using industry-standard tools and practices. Automation and DevOps, Specialist (JNCIS-DevOps) certification is highly valued by employers and can help IT professionals advance their careers in network automation and DevOps.
The JN0-421 certification exam is a multiple-choice exam that consists of 65 questions. The candidates are given 90 minutes to complete the exam. JN0-421 exam can be taken at any Pearson VUE testing center worldwide. JN0-421 exam fee is $300. JN0-421 exam is available in English and Japanese languages.
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Juniper JN0-421 (Automation and DevOps, Specialist (JNCIS-DevOps)) Certification Exam is an essential certification for IT professionals who are looking to enhance their skills and knowledge in automation and DevOps practices. With the growing demand for automation and DevOps expertise, this certification can help IT professionals stand out in the job market and advance their careers.
Reference: https://www.juniper.net/us/en/training/certification/certification-tracks/devops?tab=jncis-devops
The JN0-421 certification exam is an excellent choice for network professionals, system administrators, and developers who want to enhance their skills in automation and DevOps. It covers a broad range of topics related to Juniper automation and DevOps and is designed to test the candidate's ability to use automation tools and processes effectively. Automation and DevOps, Specialist (JNCIS-DevOps) certification is valid for three years and provides access to Juniper Networks technical resources, training, and support.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: NETCONF, RESTCONF, and APIs | 20% | - XML API - NETCONF protocol - REST API / RESTCONF - gRPC and gNMI |
| Topic 2: Platform Automation Overview | 15% | - Telemetry concepts - Junos automation architecture - JSD-based automation - MGD-based automation |
| Topic 3: YANG Models and Data Formats | 15% | - JSON, XML, YAML - YANG model concepts - Jinja2 templating - OpenConfig |
| Topic 4: JET and Orchestration Tools | 15% | - Terraform basics - Juniper Extension Toolkit (JET) - Ephemeral configuration - Ansible for Junos |
| Topic 5: Python Automation | 20% | - Junos PyEZ library - JSNAPy - RPC execution - Configuration management |
| Topic 6: Junos Automation Scripts | 15% | - Op scripts - Commit scripts - SNMP scripts - Event scripts |
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