API Testing Quiz
Test your API testing knowledge with a quiz.
1. Which HTTP status code indicates the request was well-formed but failed validation rules?
2. An API returns 200 OK but an empty body when a resource is not found. What is the main problem?
3. Which request method is expected to be idempotent?
4. You send a request without an auth token to a protected endpoint. What status is most appropriate?
5. What is the best first step when an API test fails intermittently?
6. Which header tells the server the format of the request body being sent?
7. A rate-limited endpoint should return which status when the limit is exceeded?
8. What does "boundary value testing" focus on?
About API Testing Quiz
The API Testing Quiz checks your working knowledge of the things API testers use daily: status code semantics, HTTP methods, headers, auth patterns and testing judgment calls. Answer every question, submit, and get corrections with explanations — not just a score.
It is a low-stakes way to find your gaps before an interview does, or to warm up a team discussion about API testing standards. Retake it after a "Try again" to confirm the corrections stuck.
How to use
- Read each question and select an answer — every question must be answered before submitting.
- Click "Submit answers" to see your score.
- Review the explanations on the ones you missed — that is where the learning is.
- Click "Try again" to reset and retake.
Frequently asked questions
What level is the quiz aimed at?
Working QA knowledge — the kind of questions that come up in real testing and in interviews: status code choices, method semantics, auth behavior. Comfortable seniors should score high; the misses are the interesting part.
Is my score stored or shared anywhere?
No — the quiz runs entirely in your browser and the result disappears when you leave. It is a self-check, not an assessment platform.
How should I use this for interview prep?
Take it once cold, note every miss, read up on those topics, then retake a day later. Explaining why the right answer is right — out loud — is the best rehearsal for the actual interview.