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AWS Certified Developer - Associate · AWS
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E) Eliminated - This is used for different types of authentication (like when a website asks for a username and password), not AWS Signature V4.
The developer has already performed the necessary steps to generate the signature but needs to know where to place the signature in the request to ensure the request is valid and properly authenticated. A) Correct - SigV4 officially supports placing the signature in the Authorization header, C) Eliminated - AWS specifically requires the Authorization header for passing the signature in HTTP headers D) Correct - SigV4 allows for query string authentication as an alternative to using the Authorization header. This is especially useful for presigned URLs, where the signature and other necessary information are passed in the query string (e.g., X-Amz-Signature)
C) Eliminated - The correct header is Authorization, not Authentication