JN0-423 Exam Information and Outline
Automation and DevOps Specialist (JNCIS-DevOps)
JN0-423 Exam Syllabus & Study Guide
Before you start practicing with our exam simulator, it is essential to understand the official JN0-423 exam objectives. This course outline serves as your roadmap, breaking down exactly which technical domains and skills will be tested. By reviewing the syllabus, you can identify your strengths and focus your study time on the areas where you need the most improvement.
The information below reflects the latest 2026 course contents as defined by Juniper. We provide this detailed breakdown to help you align your preparation with the actual exam format, ensuring there are no surprises on test day. Use this outline as a checklist to track your progress as you move through our practice question banks.
Below are complete topics detail with latest syllabus and course outline, that will help you good knowledge about exam objectives and topics that you have to prepare. These contents are covered in questions and answers pool of exam.
Platform Automation Overview
- Identify concepts, general features, or functionality of Junos platform automation
- Identify concepts of management process MGD‑based automation
- Identify concepts of Terraform usage in Junos automation
- Identify concepts of Juniper Extension Toolkit JET service process JSD‑based automation
gRPC
- Describe how to use gRPC gNMI for automating Junos devices
- Describe how to use gRPC gNMI for Junos telemetry and sensor paths
- Identify key elements such as Protocol Buffers, gRPC protocol, OpenConfig, and related tools
NETCONF and XML API
- Identify concepts, general functionality, and syntax of NETCONF
- Identify concepts and syntax of XML API and XPath for Junos automation
- Demonstrate knowledge of how to use NETCONF and XML for device configuration and state retrieval
Data Serialization and Templating
- Identify concepts, benefits, and operation of data serialization formats such as JSON and XML
- Identify concepts and usage of templating languages such as Jinja2 in automation workflows
- Demonstrate knowledge of how to structure and render configuration templates for automation
Python and PyEZ
- Identify core Python concepts and best practices for network automation scripts
- Demonstrate knowledge of how to use PyEZ to connect to and automate Junos devices
- Demonstrate knowledge of how to write, debug, and maintain Python scripts against Junos APIs
Automation Frameworks and Playbooks
- Identify concepts and operation of automation frameworks such as Ansible
- Demonstrate knowledge of how to build and run Ansible playbooks for Junos devices
- Identify how to incorporate Jinja templates and variables into automation frameworks
DevOps Workflows and Tools
- Identify key DevOps concepts, practices, and tools used in a network automation context
- Identify how to integrate automation into CI CD pipelines and version control workflows
- Demonstrate knowledge of using Git and similar tools to manage and deploy automation code
Junos On‑box and Off‑box Automation
- Identify concepts and benefits of on‑box automation such as Junos event scripts and op scripts
- Identify concepts and benefits of off‑box automation using external controllers and tools
- Demonstrate knowledge of how to design and deploy automation that spans both on‑box and off‑box environments
YANG and OpenConfig
- Identify concepts, benefits, and structure of YANG data models
- Identify how OpenConfig models are used to describe Junos configuration and operational state
- Demonstrate knowledge of how to interpret YANG and OpenConfig models for automation tasks
Monitoring, Logging, and Troubleshooting Automation
- Identify best practices for monitoring and logging automation workflows
- Identify how to troubleshoot failed automation runs, API calls, and configuration changes
- Demonstrate knowledge of how to interpret error messages and logs to refine automation scripts and playbooks