Expected JN0-223 Exam Topics, as suggested by Juniper :

• Module 1: Junos Automation Stack and DevOps Concepts: This section is about the core concepts and general features associated with Junos Platform automation and DevOps practices.
• Module 2: NETCONF/XML API: This section is about how to become well-versed in the core concepts and functionalities related to XML, the XML API, XPath, and the Network Configuration Protocol (NETCONF).
• Module 3: Data Serialization: This section is about how to understand the principles, advantages, and operations of data serialization. This encompasses key formats like YAML and JavaScript Object Notation (JSON), etc.
• Module 4: Python/PyEZ: This section is about how to know Python and PyEZ tools designed for automating Junos OS devices and networks. This includes learning Python syntax and core concepts, using Junos Snapshot Administrator (JSNAPy) for managing configurations, and leveraging Jinja2.
• Module 5: Rest API: This section covers the concepts, benefits, and functions of the Junos REST API. This involves understanding the Junos REST API’s capabilities and its Explorer tool, as well as how to utilize Client URL (cURL) for interacting with the API.