JNCIA-DevOps Junos Automation Stack And DevOps Concepts Practice Question
A DevOps engineer is implementing a CI/CD pipeline for automated testing of Junos configurations. During the build stage, the pipeline executes a syntax check on candidate configurations before staging them for deployment. Which tool natively provides configuration syntax validation against the Junos schema without applying the configuration to the routing engine?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Junos PyEZ configuration mode via the 'cu.validate()' method
The Junos PyEZ library provides a configuration management module that allows validation of candidate configurations locally or on the device using validate() without committing changes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Ansible junipernetworks.junos.junos_config module with 'check_mode: true'
Why it's wrong here
Check mode in Ansible dry-runs tasks, but structural Junos candidate validation is best handled via PyEZ validate or specialized lint tools.
- ✗
SaltStack junos.commit execution module
Why it's wrong here
junos.commit applies or checks commits, but PyEZ is the native Python library standard for programmatic validation.
- ✓
Junos PyEZ configuration mode via the 'cu.validate()' method
Why this is correct
The PyEZ cu.validate() method checks the candidate configuration against the device syntax and semantic rules.
- ✗
git-lfs configuration validator
Why it's wrong here
Git Large File Storage (LFS) is used for managing large binary files, not Junos syntax validation.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIA-DevOps practice question is part of Courseiva's free Juniper Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the JNCIA-DevOps exam.