JN0-224 Automation and DevOps, Associate (JNCIA-DevOps) exam
Proctored multiple-choice knowledge exam mapped to the published Juniper objectives and the current software scope named on the official page.
- Type
- Written
- Delivery
- Both
- Duration
- 90 min
- Questions
- 65
Exam sections
Junos Automation Stack and DevOps Concepts
Candidates encounter Identify concepts and general features of Junos Platform automation or DevOps Automation tools Automation frameworks Automation APIs DevOps culture, practices, and tools in the Junos Automation Stack and DevOps Concepts domain. The section links platform knowledge to practical consequences, including dependencies, trade-offs, validation methods, and recoverable failure conditions. Its place in JNCIA-DevOps becomes clearer when candidates follow inputs and outcomes into NETCONF/XML API.
Question notes
The wording may test depth through verbs such as identify, explain, configure, analyze, or troubleshoot. Match preparation depth to those verbs throughout the published Junos Automation Stack and DevOps Concepts outline. The strongest answer should remain consistent with the wider goal of automation and devops design, implementation, operations, and troubleshooting.
Preparation tips
Pair official reading with retrieval practice: close the material, reconstruct the Junos Automation Stack and DevOps Concepts workflow, and check the result against the blueprint. Record gaps by subtopic instead of repeatedly rereading the entire section. Record one concrete example you could discuss in an interview for JNCIA-DevOps.
NETCONF/XML API
NETCONF/XML API assesses working knowledge of Identify concepts and general functionality of XML, the XML API, XPath, or Network Configuration Protocol (NETCONF) XML concepts and syntax XPath concepts and syntax NETCONF concepts XML API concepts and syntax. A strong response accounts for the stated goal, the surrounding environment, and the operational effect of the selected Junos automation approach. Its place in JNCIA-DevOps becomes clearer when candidates follow inputs and outcomes into Data Serialization.
Question notes
This area rewards precise reading: plausible distractors often describe a valid feature used in the wrong layer, sequence, role, or operating condition. Anchor your response in the NETCONF/XML API scope published for Automation and DevOps, Associate (JNCIA-DevOps) exam.
Preparation tips
Build a small scenario around NETCONF/XML API, perform or diagram the relevant workflow, then explain why each choice is appropriate and what evidence would reveal a mistake. Use the official subtopics as a checklist after the exercise. Finish by checking the result against every official subtopic grouped under NETCONF/XML API.
Data Serialization
The Data Serialization domain draws its boundaries around Identify the concepts, benefits, or operation of data serialization YAML JavaScript Object Notation (JSON). It tests the candidate's ability to organize those details into a coherent product workflow rather than recall them as unrelated facts. That context distinguishes Data Serialization knowledge from generic familiarity with Junos automation.
Question notes
The assessment may connect configuration intent with resulting behavior. Candidates should understand how changes in Data Serialization become visible through status, telemetry, policy evaluation, or user experience. This distinction matters specifically to Automation and DevOps, Associate (JNCIA-DevOps) exam and its role-focused assessment boundary.
Preparation tips
Build a small scenario around Data Serialization, perform or diagram the relevant workflow, then explain why each choice is appropriate and what evidence would reveal a mistake. Use the official subtopics as a checklist after the exercise. Repeat the exercise with a changed requirement to test whether the reasoning transfers beyond one memorized case.
Python/PyEZ
Python/PyEZ assesses working knowledge of Identify Python or PyEZ tools for automating Junos OS devices and networks Syntax and concepts Junos Snapshot Administrator (JSNAPy) Jinja2 Remote Procedure Calls (RPCs) PyEZ exception handling Device status and configuration handling. A strong response accounts for the stated goal, the surrounding environment, and the operational effect of the selected Junos automation approach. This framing keeps the section aligned with the role expectations behind JNCIA-DevOps.
Question notes
The assessment may connect configuration intent with resulting behavior. Candidates should understand how changes in Python/PyEZ become visible through status, telemetry, policy evaluation, or user experience. Cross-check the proposed answer against dependencies that connect Python/PyEZ with Rest API.
Preparation tips
Make a table of common Python/PyEZ symptoms, likely causes, decisive evidence, and corrective actions. Use it to work through short incidents until diagnosis follows evidence rather than pattern matching. Record one concrete example you could discuss in an interview for JNCIA-DevOps.
Rest API
The official outline places Identify the concepts, benefits, or operation of the Junos REST API Junos REST API Junos REST API Explorer Client URL (cURL) access for the REST API within Rest API. Candidates need to understand how the pieces relate, when each one is relevant, and what a sound result looks like in the context of Junos automation. Candidates should relate this material to Junos Automation Stack and DevOps Concepts wherever the workflow crosses domain boundaries.
Question notes
The domain can appear through direct knowledge checks as well as short operational or design scenarios; pay close attention to scope, constraints, and the action verb in each prompt. For JNCIA-DevOps, this domain should be interpreted alongside Junos Automation Stack and DevOps Concepts, not as a disconnected topic.
Preparation tips
Translate every published subtopic in Rest API into an action: configure it, locate it, analyze its output, or explain its effect. Revisit any item that you can define but cannot apply. Close the session by explaining how this work supports automation and devops design, implementation, operations, and troubleshooting without consulting notes.