JN0-223: Automation and DevOps, Associate

By Juniper · Browse Mode
About the Exam

This associate-level exam covered Junos automation and DevOps concepts for Juniper devices and solutions. It targeted networking professionals with introductory knowledge of automation tools and best practices, and passing demonstrated foundational competency with scripting, NETCONF/XML API, data serialization, Python/PyEZ, and Junos REST API topics. Juniper retired JN0-223 on February 16, 2025.

Exam Topics

  • Junos Automation Stack and DevOps Concepts20%
  • NETCONF/XML API20%
  • Data Serialization10%
  • Python/PyEZ20%
  • REST API20%

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Last updated August 25, 2025 at 4:35 AM

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QuestionQ1

Data Serialization

Which two data structures are used by YAML?

Choose two
Explanation

YAML represents collections as mappings for key-value pairs and sequences for ordered items.

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QuestionQ2

Junos Automation Stack and DevOps Concepts

Which type of on-box automation script is intended to run whenever a user performs a configuration change?

Explanation

Junos OS invokes enabled commit scripts during each commit operation. They validate the candidate configuration and can generate warnings, errors, or configuration changes before the configuration becomes active.

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QuestionQ3

Python/PyEZ

Which Junos configuration database does PyEZ update by default?

Explanation

Junos PyEZ updates the candidate global configuration by default, which Juniper also calls the shared configuration database. Private, dynamic, and ephemeral databases are selected only by explicitly setting a different configuration mode.

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QuestionQ4

Python/PyEZ

What is the proper sequence for executing a Python script?

Explanation

Python source is translated into bytecode before the Python runtime interprets and executes that bytecode on the Python virtual machine. This makes the sequence that begins with bytecode translation and proceeds to interpretation and runtime execution correct.

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QuestionQ5

REST API

Using the set rest control configuration command, which two methods can control access to the REST API running on a Junos device?

Choose two
Explanation

The REST API control configuration supports allowed-sources to permit only specified source IP addresses and connection-limit to set the maximum number of simultaneous HTTP and HTTPS connections.

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Topics covered
Junos Automation Stack and DevOps ConceptsNETCONF/XML APIData SerializationPython/PyEZREST API
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