How does deduplication reduce disk usage of backup data?

Question

Options

• AIt compresses incoming backup data stream against itself.
• BIt compresses new backup data against previous backup data already stored on the device.
• CIt eliminates duplicate files within the backup.
• DIt compares new backup data against backup data on other devices.

• A
  6% (2)
• B
  8% (3)
• C
  3% (1)
• D
  83% (30)

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