If the disk data is lost, how to use the backup created in advance to restore the data? (Multiple choice)

Question

Options

• ABackup and recovery cannot be performed after the disk is deleted
• BUse backup to restore data to original disk
• CCreate a new disk using the backup 18
• DUnmount the disk to recover data

• A
  10% (3)
• B
  74% (23)
• D
  16% (5)

Explanation

Options B and C are correct because modern cloud and virtualized storage platforms support two primary restoration paths when disk data is lost: restoring data back onto the original disk location using a snapshot or backup (B), and creating an entirely new disk from a backup image (C), which is useful when the original disk no longer exists or you want to restore to a different destination.

Option A is wrong because losing disk data or even deleting a disk does not eliminate the ability to recover, provided a backup or snapshot was taken before the loss occurred - backup systems are specifically designed to operate independently of the original disk's state. Option D is wrong because unmounting a disk is a preparatory step for certain operations but is not a recovery mechanism; it does not retrieve lost data and has no role in restoring from a backup.

Memory tip: Think of a backup as a photograph of your disk. You can either reprint the photo onto the same frame (restore to original disk, B) or put it in a brand new frame (create a new disk, C) - but simply removing the old frame from the wall (unmounting) does nothing to bring the photo back.

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