Free Juniper JN0-223 Exam Actual Questions

The questions for JN0-223 were last updated On Mar 25, 2025

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Question No. 1

Which two programming languages are used for Junos on-box scripting? (Choose two.)

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Correct Answer: C, D

Junos on-box scripting supports the following programming languages:

SLAX (C): SLAX (Structured Language for XML) is a scripting language designed specifically for Junos devices. It allows for easy manipulation of XML data, making it ideal for creating Junos scripts that interact with device configurations.

XSLT (D): XSLT (Extensible Stylesheet Language Transformations) is another language used for transforming XML documents into other formats. It is commonly used in Junos for transforming XML data into different views or outputs.

Options A (Perl) and B (Ruby) are not used for Junos on-box scripting. While these languages are popular in other contexts, Junos scripting relies heavily on XML-based languages like SLAX and XSLT.


Junos XML API and Scripting Guide: Describes the use of SLAX and XSLT for on-box scripting.

Juniper Networks Automation Documentation: Provides examples and best practices for using SLAX and XSLT in Junos scripting.

Question No. 2

Junos PyEZ tables are formatted using which file type?

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Correct Answer: B

Junos PyEZ uses YAML (YAML Ain't Markup Language) files to define the format for tables and views when working with operational and configuration data. YAML is a human-readable data format that is commonly used for configuration files, making it suitable for defining data structures in PyEZ.

Option B (YAML) is correct because PyEZ tables are defined using YAML files.

Options A (JSON), C (txt), and D (IXML) are incorrect in this context, as YAML is the standard format used.

Supporting Reference:

Junos PyEZ Tables Documentation: Explains the use of YAML files for formatting tables and views in Junos PyEZ.


Question No. 3

What will determine which data serialization format is used for interfacing with a system?

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Correct Answer: A

Question No. 4

Exhibit.

Referring to the exhibit, which XPath statement would retrieve the commit-user attribute in the candidate configuration?

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Correct Answer: B

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Question No. 5

Which type of on-box automation script is designed to run every time a user executes a configuration change?

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Correct Answer: C

In Junos OS, a commit script is an on-box automation script that runs every time a configuration change is committed. Commit scripts are used to enforce configuration policies, validate configuration changes, or make automatic adjustments to configurations when certain conditions are met.

Commit Script (C): Executes automatically during the commit process, ensuring that the new configuration adheres to specific rules or conventions before it is applied to the system.

Event, SNMP, and operation scripts are used for other purposes in Junos automation but do not run automatically with every configuration change.


Junos OS Automation Scripts Guide: Provides details on different types of scripts, including commit scripts, and their use cases.

Juniper Networks Documentation: Offers examples and best practices for creating and using commit scripts.