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Juniper JN0-421 Exam : Automation and DevOps, Specialist (JNCIS-DevOps)

JN0-421 actual test
  • Exam Code: JN0-421
  • Exam Name: Automation and DevOps, Specialist (JNCIS-DevOps)
  • Updated: Jul 20, 2026
  • Q & A: 66 Questions and Answers
  • PDF Demo
  • PC Test Engine
  • Online Test Engine
  • Total Price: $59.99  

About Juniper JN0-421 Exam

Juniper JN0-421 Exam Certification Details:

Exam NameAutomation and DevOps Specialist
Passing ScoreVariable (60-70% Approx.)
Recommended TrainingJunos Platform Automation and DevOps (JAUT)
Number of Questions65
Sample QuestionsJuniper JN0-421 Sample Questions
Exam Price$300 USD
Exam RegistrationPEARSON VUE
Exam CodeJN0-421 JNCIS-DevOps
Duration90 minutes

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

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Juniper JN0-421 Exam Topics:

SectionObjectives
Platform Automation OverviewIdentify concepts, general features, or functionality of Junos platform automation
  • MGD-based automation
  • Telemetry concepts
  • JSD-based automation
PythonDescribe Python tools for automating Junos
  • PyEZ
  • RPCs
  • PyEZ exception handling
  • REST
  • JSNAPy
  • Jinja2
Juniper Extension ToolkitIdentify the concepts, general features, or functionality of the Juniper Extension Toolkit
  • Service APIs
  • gRPC/gNMI (network management interface)
  • Notification APIs
  • Fast Programmatic Configuration (Ephemeral DBs)
YANG/OpenConfigIdentify the concepts and general features of Junos support for YANG models
  • Implementation concepts
Data Serialization and TemplatingDescribe the concepts, benefits, or operation of data serialization
  • YAML
  • JSON
  • Jinja2
  • XML
Stateful Configuration (Ansible/SALT)Describe how to use Ansible for automating Junos
  • Playbooks
  • Templates (Jinja2)
  • Describe how to use SALT for automating Junos
  • Tower
  • Pillar
  • Runner
Junos Automation ScriptsDescribe the concepts, benefits, or operation of automation scripts for Junos
  • Commit, Op, Event, or SNMP scripts
  • Python
  • SLAX
NETCONF/XML APIDescribe the concepts, benefits, or operation of automation access methods
  • XML API
  • NETCONF
  • REST API

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Juniper JN0-421 Exam Syllabus Topics:

SectionObjectives
Topic 1: Juniper Platforms and Junos Automation- Commit scripts and event scripts
- Junos OS automation features
Topic 2: Scripting and Tooling- Git and version control basics for automation workflows
- Python for network automation
- Ansible automation with Junos devices
Topic 3: Automation Fundamentals- DevOps principles and workflows
- Automation concepts and use cases in networking
Topic 4: APIs and Data Formats- REST APIs and Junos REST API
- Data formats (JSON, XML, YAML)
Topic 5: CI/CD and Operational Automation- Testing and validation of automation workflows
- CI/CD pipelines in network automation

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