Question 9: Once you have uploaded your data in Oracle Storage Cloud, how would you make sure that data stored in Cloud storage has not been corrupted?

A.      Using MD5 checksum

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B.      Based on HTTP response code

C.      There is no way, you need to download again to verify after uploading.

D.      Using encryption keys

Ans: A, B

Exp: You can use the MD5 checksum and HTTP response code returned by Oracle Storage Cloud Service to validate that your data was stored reliably.

When an object is created in Oracle Storage Cloud Service from an uploaded file, the service returns the MD5 checksum of the object in the ETag header of the HTTP response. The client that initiated the backup can verify whether the file was uploaded correctly by comparing the MD5 checksum provided by the service with a locally calculated checksum.

 

Every request to Oracle Storage Cloud Service receives an HTTP response containing a status code, which indicates whether the requested operation was completed successfully. The client that initiated the backup can determine whether the data was backed up reliably, by interpreting the status code returned by Oracle Storage Cloud Service.

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