REST API quiz

Test your REST API knowledge with a free interactive quiz — 28 questions with answers and explanations. No signup needed to play.

What status code is appropriate when a request is syntactically valid but fails business/validation rules (e.g., email already taken)?

1. What status code is appropriate when a request is syntactically valid but fails business/validation rules (e.g., email already taken)?
2. What does status code 429 indicate?
3. What does REST stand for?
4. What is content negotiation in HTTP/REST?
5. How are optional filters like search terms or pagination usually passed in REST?
6. Which HTTP method is used to retrieve a resource without modifying it?
7. Why should POST generally NOT be used for read-only data retrieval?
8. What does the HTTP status code 201 mean?
9. What is HATEOAS?
10. What does it mean that a method is "idempotent"?
11. How do you typically address a single item within a collection?
12. What is the difference between 401 Unauthorized and 403 Forbidden?

More quizzes