Which of the following is a method of authentication that uses a token for API access?
A. Basic Auth
B. Digest Auth
C. NTLM
D. OAuth
Answer: Option D
Solution (By JKExamLibrary)
OAuth (Open Authorization) is an open standard for token-based authentication, commonly used for APIs to allow third-party services access without exposing passwords.
Explanation:
400 Bad Request indicates that the server cannot process the request due to malformed syntax or invalid parameters. 401 is Unauthorized, 403 Forbidden, 404 Not Found.
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