The Cisco Certified DevNet Associate credential validates your ability to design, build, and deploy applications on Cisco platforms. The 200-901 DevNet Associate Exam tests foundational knowledge across software development, APIs, infrastructure automation, and security practices. This page provides a structured study roadmap and practical resources to help you prepare effectively. Whether you're transitioning into DevOps or strengthening your development skills, understanding the exam domains ensures focused preparation.
Use this topic map to guide your study for Cisco 200-901 (DevNet Associate Exam) within the Cisco Certified DevNet Associate path.
The 200-901 exam uses multiple question types to assess both conceptual understanding and practical problem-solving ability. Questions progress in difficulty and reflect real-world scenarios developers encounter.
Questions emphasize practical application, so studying with hands-on examples and real code samples strengthens both confidence and performance.
An effective study plan breaks the 200-901 syllabus into manageable weekly blocks, pairs theory with hands-on practice, and includes regular self-assessment. Allocate 4-6 weeks for thorough preparation, depending on your current experience level.
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Understanding and Using APIs and Application Deployment and Security typically account for a larger portion of the exam. However, all six domains are tested, so balanced preparation across all topics is essential. Review the official Cisco exam blueprint to see the exact percentage breakdown for each domain.
In practice, you write code (Software Development and Design), call APIs to retrieve or send data (Understanding and Using APIs), deploy that code to Cisco platforms (Cisco Platforms and Development), secure credentials and containerize the application (Application Deployment and Security), automate infrastructure provisioning (Infrastructure and Automation), and ensure the network layer supports communication (Network Fundamentals). Understanding these connections helps you see why each domain matters and improves retention.
Hands-on experience significantly boosts exam readiness. Prioritize Cisco DevNet sandbox labs for API calls, Docker containerization exercises, and Ansible automation tasks. Writing at least 3-5 small Python scripts and deploying one simple application will deepen your understanding far more than reading alone.
Frequent errors include misunderstanding HTTP status codes (confusing 401 vs. 403), overlooking security best practices (hardcoding credentials), and rushing through scenario questions without fully reading the prompt. Read each question carefully, eliminate obviously wrong answers first, and flag difficult items to review if time permits.
In your final week, focus on weak domains identified in practice tests rather than re-reading strong areas. Do a full-length timed practice test 2-3 days before the exam, review all incorrect answers, and then do light review of key terminology and API endpoints the day before. Avoid cramming new material; instead, reinforce what you already know.
Refer to the exhibit.
A developer just finished testing a Python script and wants to save the list of packages and versions installed on the current machine. The developer must make sure that it will not cause any issues if tested on another device due to different library versions. Which line of code needs to be placed on the snippet where the code is missing?
The pip freeze command is used to output installed packages in the current environment and their versions. The > operator redirects this output to a file, in this case, requirements.txt.
pip freeze: Outputs the list of installed packages and their versions.
Redirection: The > operator is used to redirect the output to a file.
Option B is correct as it uses the > operator to redirect the output of pip freeze to requirements.txt.
Which device is used to transport traffic from one broadcast domain to another broadcast domain?
A router is a network device that routes traffic between different broadcast domains and subnets. Routers operate at the network layer (Layer 3) of the OSI model and use IP addresses to make forwarding decisions. They are responsible for determining the best path for data packets to travel across interconnected networks, ensuring that traffic is correctly directed from one broadcast domain to another.
Cisco Router Basics
Broadcast Domains and Routers
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Before which process is code review performed when version control is used?
Code review is typically performed before the merge of code in a version control system. This process involves examining code changes to ensure they meet the required standards, are free of bugs, and align with the project's goals. The review usually happens after code has been committed to a feature branch but before it is merged into the main branch. This helps maintain the integrity of the main branch and ensures that any issues are caught early. More information can be found in best practices for code review.
Refer to the exhibit.
A network engineer must copy the ''config.txt'' file from directory TEST to directory PROD. The copied file must also be renamed into ''current.txt''. Which command must be used to accomplish these tasks?
To copy a file from one directory to another and rename it in the process, the cp (copy) command in Linux can be used with the appropriate source and destination paths:
Command Breakdown:
cp: The copy command.
./TEST/config.txt: The source file path.
./PROD/current.txt: The destination file path with the new name.
Thus, the correct command to achieve this task is: cp ./TEST/config.txt ./PROD/current.txt
Linux cp Command Manual
Cisco DevNet Associate Certification Guide
What does a developer import in a script to parse a file from XML to Python?
To parse XML data in Python, a developer typically imports a library that provides the necessary functions and methods for XML parsing.
Libraries for XML Parsing: Python has several libraries for parsing XML, such as xml.etree.ElementTree, lxml, and minidom.
Functionality: These libraries offer functions and methods to read, manipulate, and extract data from XML files.
Example:
import xml.etree.ElementTree as ET
tree = ET.parse('file.xml')
root = tree.getroot()
