Chapter 3

Authentication & Authorisation — quiz

5 questions · ~4 min

Chapter 3 quiz

Question 1 of 5

Your test fails with 401 Unauthorized but you're passing what looks like a valid API key. What's the most likely culprit?

The API server is offline
Wrong header name or format — many APIs require `Authorization: Bearer <key>` exactly, or a specific header like `X-API-Key`, with no extra whitespace
API keys must always be sent in the request body
401 means the body is empty