Free JNCIA-DevOps practice test — 273+ JNCIA-DevOps practice questions with detailed explanations across all 5 official JNCIA-DevOps exam domains. Every set is scored and drawn from the live question bank — so you practise exactly what the exam tests, not outdated dumps.
Courseiva includes 273+ Juniper Networks Automation and DevOps, Associate (JNCIA-DevOps, JN0-224) (JNCIA-DevOps) practice questions across the official exam domains.
Feature
Courseiva
This free JNCIA-DevOps practice test mirrors the structure and difficulty of the real Juniper Networks Automation and DevOps, Associate (JNCIA-DevOps, JN0-224) (JNCIA-DevOps) exam. Every question is written against the official 2026 exam blueprint published by Juniper Networks, ensuring you practise exactly what the exam tests — not last year's objectives.
The JNCIA-DevOps blueprint is divided into 5 weighted domains. Questions on this page are distributed proportionally across each domain, so the mix you see here reflects the same weighting you'll face on exam day. High-weight domains like NETCONF And XML API and Python And PyEZ contribute the most questions, meaning focused practice on these areas gives you the highest return on study time.
JNCIA-DevOps Exam Blueprint — 5 Domains
NETCONF And XML API
Python And PyEZ
Junos Automation Stack And DevOps Concepts
Data Serialization
Junos REST API
21 numbered sets, 5 domain question banks, and targeted sessions — every page is a unique set of questions.
Choose all correct answers
Each chapter page covers one topic in depth — theory, key concepts, and focused practice questions. Use these to close knowledge gaps before returning to full practice tests.
Getting the most from practice questions requires more than just clicking through answers. Here is the study method used by candidates who pass JNCIA-DevOps on their first attempt:
Answer before revealing
Read each JNCIA-DevOps question fully, eliminate obviously wrong choices, then commit to an answer before clicking to reveal. This active recall process is what builds lasting knowledge.
Read every explanation
Even when you answer correctly, read the full explanation. Knowing WHY the right answer is correct — and why the distractors are wrong — is what separates a 750 score from a 900 score.
Track weak domains
Note which JNCIA-DevOps domains you get wrong most often. Then do a targeted 20-30 question session focused only on that domain until your accuracy improves.
Simulate exam pacing
The real JNCIA-DevOps gives you roughly 1.4 minutes per question. Use the 60 or 120-question sessions to practise hitting that pace comfortably.
Most candidates who pass JNCIA-DevOps on their first attempt report doing between 400 and 800 practice questions over 4–8 weeks of preparation. With 273+ questions in the Courseiva bank, you have more than enough material to build that repetition without seeing the same question twice.
Answer each question to reveal the full explanation and correct answer. This starter set is drawn from all 5 exam domains in blueprint proportion. Use the session selector to start a longer focused practice run.
Which tool or library is commonly used in Python to simplify interacting with Junos NETCONF APIs by abstracting low-level XML handling?
Select an answer to reveal the explanation
A Python script using PyEZ loads a configuration from a file and commits it on a Junos device. The commit fails with a `CommitError` exception. You need to retrieve the specific error message returned by the device. Which method or attribute should you use to obtain the detailed error text?
Select an answer to reveal the explanation
What is the primary benefit of using structured data formats (such as XML, JSON, or YAML) over unstructured CLI text output in Junos automation?
Select an answer to reveal the explanation
An engineer writes a Python script that loads a JSON configuration file using the json.load() method. The file contains configuration parameters for a Junos device. If the JSON file contains a trailing comma at the end of the last element in an array, what will happen when the script executes?
Select an answer to reveal the explanation
An automation engineer is troubleshooting a Junos REST API script that intermittently fails with HTTP 401 Unauthorized errors when retrieving operational data. The script uses HTTP Basic Authentication with a valid username and password. The engineer confirms that the credentials are correct and that the REST API is enabled. What is the most likely cause of the intermittent failures?
Select an answer to reveal the explanation
A Python automation script parses a Junos telemetry stream in JSON. The JSON payload uses integer keys in a dictionary (e.g., {443: 'HTTPS'}). When loaded into Python using json.loads(), what data type do the dictionary keys become?
Select an answer to reveal the explanation
You are writing a Python script that converts a Junos operational state output from XML (via NETCONF) into JSON. The XML structure contains sibling elements with the same tag name. When converted naively, how do standard XML-to-JSON conversion libraries (like xmltodict) typically represent these repeated sibling elements in the resulting JSON dictionary?
Select an answer to reveal the explanation
An automation engineer wants to log structured data from a Junos device automation run. The Python script formats a dictionary into a JSON string and prints it. However, the engineer wants all keys sorted alphabetically to ensure consistent log diffing. Which parameter accomplishes this in json.dumps()?
Select an answer to reveal the explanation
Which data serialization formats are natively supported by the Junos REST API for both input and output payloads?
Select an answer to reveal the explanation
An engineer needs to represent an ordered list of IP addresses in a YAML configuration file for a Junos automation playbook. Which valid YAML syntax correctly defines a sequence of items?
Select an answer to reveal the explanation
You are using the PyEZ SW utility to install a new Junos image on a device. Which method parameter allows the script to automatically reboot the device after a successful installation?
Select an answer to reveal the explanation
You are developing a Python script using PyEZ to load a configuration onto a Junos device. You need to ensure that the configuration is merged with the existing candidate configuration, and that the load operation does not perform a commit check automatically. Which method should you use to load the configuration from a file?
Select an answer to reveal the explanation
What is the primary benefit of decoupling network configuration data (YAML/JSON) from presentation templates (Jinja2) in network automation?
Select an answer to reveal the explanation
An engineer needs to retrieve the entire candidate configuration in JSON format from a Junos device using the Junos REST API. Which HTTP header must be included in the GET request to ensure the response is returned in JSON format?
Select an answer to reveal the explanation
An automation script reads a configuration template where boolean values are represented as 'yes' and 'no' in YAML. When parsed using PyYAML in Python, how are these values interpreted?
Select an answer to reveal the explanation
Which Junos automation toolset relies heavily on XML over NETCONF and provides robust Python libraries tailored specifically for Junos network devices?
Select an answer to reveal the explanation
An automation engineer wants to retrieve information about all software packages installed on a Junos device using the REST API. Which operational RPC endpoint category is typically targeted?
Select an answer to reveal the explanation
You want to run a JSNAPy verification test via Python code. Which Python class should you import and instantiate to execute the snapshot comparison programmatically?
Select an answer to reveal the explanation
What is the primary benefit of using PyEZ Table and View abstractions over raw RPC XML parsing in Python scripts?
Select an answer to reveal the explanation
Which character is used to indicate a mapping key-value pair in YAML syntax?
Select an answer to reveal the explanation
Answer all 20 questions to see your domain score breakdown
A structured study plan dramatically increases your chances of passing JNCIA-DevOps on the first attempt. The most effective approach combines reading the official Juniper Networks documentation or a study guide, watching video explanations for difficult concepts, and then reinforcing everything with daily practice questions.
We recommend the following weekly structure for JNCIA-DevOps preparation:
Cover each JNCIA-DevOps domain systematically. Read the exam objectives, watch explanatory content, and do 10–20 practice questions per domain to test understanding as you go.
Run full 50–60 question mixed sessions daily. Review every wrong answer in detail. Identify which domains are consistently scoring below 70% and revisit those study materials.
Do 100–120 question timed sessions to simulate real exam conditions. Aim for consistent scores above 80% before booking your exam date. A score above 80% in practice typically translates to a passing JNCIA-DevOps score.
On exam day, the JNCIA-DevOps tests your ability to apply knowledge to realistic scenarios — not just recall definitions. This is why reading explanations and understanding the reasoning behind every answer matters more than simply grinding question volume. Use the high-count sessions (100, 120) in the final weeks as your confidence benchmark.
Questions
65
On the real exam
Time limit
90 min
1.4 min per question
Scenario-based questions covering exam objectives with detailed answer explanations.
Yes. Courseiva provides free Juniper Networks Automation and DevOps, Associate (JNCIA-DevOps, JN0-224) (JNCIA-DevOps) practice questions with explanations across the official exam domains. Start with a quick practice test, then continue with topic-based practice, mock exams, missed-question review, bookmarked questions, weak-topic recommendations, and readiness tracking. No account required. Create a free account to unlock per-domain analytics and progress tracking across every certification on the platform. Courseiva is free forever, supported by advertising.
Every question is written against the official JNCIA-DevOps exam blueprint published by Juniper Networks. Our questions follow the same wording style, scenario complexity, and answer structure as the actual exam. They are original questions — not brain dumps — so you learn the underlying concepts and reasoning, not just memorised answers. Candidates who study with brain dumps often pass but have no transferable knowledge; Courseiva questions make you genuinely competent.
Most candidates who pass JNCIA-DevOps on their first attempt do 30–60 questions per day. Use the Quick 10 session for daily warm-ups when you are short on time. On study days, run a 50 or 60-question session to build stamina. Reserve 100 and 120-question sessions for the final two weeks when you want to simulate real exam conditions and benchmark your readiness.
The JNCIA-DevOps covers 5 domains: NETCONF And XML API, Python And PyEZ, Junos Automation Stack And DevOps Concepts, Data Serialization, Junos REST API. Each domain carries a different weight, so allocate your study time accordingly. The highest-weighted domains — NETCONF And XML API and Python And PyEZ — should receive the most attention.
Exam dumps are memorised question-and-answer lists taken from actual exam papers, often obtained illegally and shared without Juniper Networks's authorisation. Using them violates your NDA and Juniper Networks's certification agreement, and can result in certification revocation. Courseiva questions are original — AI-assisted, checked against the official exam objectives, and published under the editorial oversight of an engineer with 12+ years' experience. They test the same knowledge areas using new scenarios and wording. You learn the material, not just the answers.
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