20+ practice questions focused on Software Development and Design — one of the most tested topics on the Cisco DevNet Associate 200-901 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Software Development and Design PracticeIn a RESTful API, which HTTP method is idempotent but not safe?
Explanation: Both DELETE and PUT are idempotent methods that can modify resources, meaning they are not safe. GET is safe and idempotent. POST is neither.
A Python script is interacting with a REST API that returns JSON. The script needs to handle potential errors gracefully. Which TWO practices should be implemented? (Choose two.)
Explanation: Options A and C are both correct practices when interacting with a REST API using the Python requests library. Option A: `response.raise_for_status()` is a method that automatically raises an exception for HTTP error status codes (4xx and 5xx), allowing structured error handling via try/except. Option C: Directly checking `response.status_code` gives fine-grained control to handle different status codes as needed. Both approaches are complementary and recommended. The incorrect options: B (single try/except without differentiation) is poor practice as it treats all exceptions the same. D (assuming success) ignores error handling. E (always parsing with json.loads) fails if content is not JSON.
A developer writes a Python script to read a configuration file. Which code snippet correctly opens the file 'config.json' for reading and ensures the file is closed after use?
Explanation: It uses the `with` statement, which is a context manager that automatically calls `f.close()` when the block exits, ensuring the file is properly closed even if an exception occurs. The `'r'` mode opens the file for reading, and `f.read()` reads the entire contents into the `data` variable.
A network automation script uses the requests library to retrieve device information from a REST API. The API requires authentication via a bearer token. Which code example correctly sets the Authorization header?
Explanation: It constructs the Authorization header using the 'Bearer' scheme, which is the standard method for passing OAuth 2.0 bearer tokens in HTTP requests. The requests library requires the header to be explicitly set as a dictionary, and the token must be prefixed with 'Bearer ' to comply with RFC 6750.
A developer is using Git for version control. After creating a new feature branch 'feature-login' from 'main', they make several commits. Meanwhile, another developer has merged changes into 'main'. The developer wants to incorporate the latest main changes into 'feature-login' without creating a merge commit. Which Git command should they use?
Explanation: `git pull --rebase origin main` fetches the latest changes from the remote `main` branch and then rebases the current `feature-login` branch onto those changes. This incorporates the new commits from `main` without creating a merge commit, resulting in a linear history. The `--rebase` flag ensures that the developer's commits are replayed on top of the updated `main`, avoiding the extra merge commit that `git merge` would create.
+15 more Software Development and Design questions available
Practice all Software Development and Design questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Software Development and Design. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Software Development and Design questions on the 200-901 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Software Development and Design is tested as part of the Cisco DevNet Associate 200-901 blueprint. Practicing with targeted Software Development and Design questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 200-901 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Software Development and Design is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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