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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