JNCIS-DEVOPS JN0-421 Practice Exam
JNCIS-DEVOPS JN0-421
About JNCIP-ENT JN0- 421 Exam
JN0-421 exam is track designed to allow participants to demonstrate competence with common scripting languages and tools through the automation of device and network functions. Successful candidates demonstrate understanding of applying automation to Junos devices and networks.
Target Audience
The exam is designed for networking professionals with intermediate knowledge of automation tools and best practices. The written exam verifies the candidate's understanding of the application of scripting tools such as PyEZ, Python, and Ansible to Junos devices and networks.
Prerequisite for the exam
Candidates who wish to appear for JN0-421exam are required to pass JNCIA-DevOps certification exam.
Course Structure
1. Platform Automation Overview
Identify concepts, general features, or functionality of Junos platform automation
• MGD-based automation
• Telemetry concepts
• JSD-based automation
2. NETCONF/XML API
Describe the concepts, benefits, or operation of automation access methods
• XML API
• NETCONF
• REST API
3. Data Serialization and Templating
Describe the concepts, benefits, or operation of data serialization
• YAML
• JSON
• Jinja2
• XML
4. Python
Describe Python tools for automating Junos
• PyEZ
• RPCs
• PyEZ exception handling
• REST
• JSNAPy
• Jinja2
5. 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
6. Junos Automation Scripts
Describe the concepts, benefits, or operation of automation scripts for Junos
• Commit, Op, Event, or SNMP scripts
• Python
• SLAX
7. YANG/OpenConfig
Identify the concepts and general features of Junos support for YANG models
• Implementation concepts
8. Juniper Extension Toolkit
Identify 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)
Exam Pattern
- Exam Name: Automation and DevOps, Specialist (JNCIS-DevOps)
- Exam Code: JN0-421
- Number of Questions: 65
- Length of Time: 90 Minutes
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