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

Pass JN0-421 Exam Cram

Exam Code: JN0-421

Exam Name: Automation and DevOps, Specialist (JNCIS-DevOps)

Updated: Aug 08, 2026

Q & A: 66 Questions and Answers

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Juniper JN0-421 Exam Certification Details:
Number of Questions65
Exam NameAutomation and DevOps Specialist
Recommended TrainingJunos Platform Automation and DevOps (JAUT)
Duration90 minutes
Exam Price$300 USD
Passing ScoreVariable (60-70% Approx.)
Sample QuestionsJuniper JN0-421 Sample Questions
Exam CodeJN0-421 JNCIS-DevOps
Exam RegistrationPEARSON VUE
Juniper JN0-421 Exam Topics:
SectionObjectives
Junos Automation ScriptsDescribe the concepts, benefits, or operation of automation scripts for Junos
  • Commit, Op, Event, or SNMP scripts
  • Python
  • SLAX
Platform Automation OverviewIdentify concepts, general features, or functionality of Junos platform automation
  • MGD-based automation
  • Telemetry concepts
  • JSD-based automation
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
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)
NETCONF/XML APIDescribe the concepts, benefits, or operation of automation access methods
  • XML API
  • NETCONF
  • REST API
Data Serialization and TemplatingDescribe the concepts, benefits, or operation of data serialization
  • YAML
  • JSON
  • Jinja2
  • XML
YANG/OpenConfigIdentify the concepts and general features of Junos support for YANG models
  • Implementation concepts
PythonDescribe Python tools for automating Junos
  • PyEZ
  • RPCs
  • PyEZ exception handling
  • REST
  • JSNAPy
  • Jinja2

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

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Automation and DevOps, Specialist (JNCIS-DevOps) certification is one of the most popular IT certifications. Chasing after the tideway of IT industry, JN0-421 - Automation and DevOps, Specialist (JNCIS-DevOps) certification keeps current on the latest information, technologies and network solutions. Attracted by enormous benefits brought by achieving Automation and DevOps, Specialist (JNCIS-DevOps) certification, most of IT candidates are crazy about the study and prepare for the test day and night. Automation and DevOps, Specialist (JNCIS-DevOps) certification can help the candidate get a foot in the door, even without copious amounts of hands-on experience. Juniper certification is really a valuable intelligence about what people are thinking about and wrestling with as they ponder their current job situation and their future career prospects and interests. So there is no doubt that lots of people spare no effort to pursue it.

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