Câu 7: DES-1B31: Specialist - Systems Administrator, Elastic Cloud Storage (ECS)

What is the difference between S3 authentication signature version 2 and S3 authentication signature version 4?

1. A. Version 2 uses a shared secret and access key ID Version 4 uses the date/region algorithm
2. B. Version 2 uses HMAC algorithm Version 4 uses the credentials scope algorithm — đáp án hiện tại
3. C. Version 2 uses a namespace based signature Version 4 uses HMAC algorithm
4. D. Version 2 uses the secret key to sign the request Version 4 uses a signing key