A company hosts a large amount of data in blob storage for i - CompTIA CAS-005

Question

A company hosts a large amount of data in blob storage for its customers. The company recently had a number of issues with this data being prematurely deleted before the scheduled backup processes could be completed. The management team has asked the security architect for a recommendation that allows blobs to be deleted occasionally, but only after a successful backup. Which of the following solutions will BEST meet this requirement?

Answers
  1. correct
Explanation

The correct answer is: C. Implement soft delete for blobs.

Soft delete for blobs is a feature designed to prevent accidental or premature deletion of data. When soft delete is enabled, deleted blobs are retained in a recoverable state for a specified retention period. This solution meets the requirement because:

  1. Allows deletion after backup: Blobs can still be deleted, but they are retained for recovery during the specified retention period, ensuring backups can complete before permanent deletion.
  2. Prevents accidental loss: If blobs are deleted prematurely, they can be restored easily from the soft delete state.

Why the other options are incorrect:

Mirror the blobs at a local data center:

  • Incorrect: Mirroring provides redundancy but does not prevent or address the issue of premature deletion.

Enable fast recovery on the storage account:

  • Incorrect: Fast recovery enables quick restoration of data in case of failure but does not address the issue of controlling deletion timing relative to backups.

Make the blob immutable:

  • Incorrect: Making a blob immutable would prevent it from being deleted entirely, even when deletion is occasionally required after a backup is successfully completed. This does not align with the company's need for controlled deletions.

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