Quick Check

1. When would you use PUT instead of POST?

2. Answer: PUT replaces an entire record, while POST creates a new record. Use PUT when you're updating an existing resource with complete new data; use POST when creating something new.

3. What should you set the Content-Type header to when sending JSON data?

4. Answer: Content-Type: application/json

5. If you get a 401 status code, what does that mean and what should you check?

6. Answer: 401 means Unauthorized — your authentication failed. Check that your API key, token, or credentials are correct and properly formatted in the Authorization header.

Next: Lesson 4 — Authentication Patterns