What combination of backup strategies provides the fastest backup restoration time?

Question

Options

• AIncremental backups and differential backups
• BFull backups and incremental backups
• CPartial backups and incremental backups
• DFull backups and differential backups

• A
  4% (1)
• B
  8% (2)
• C
  16% (4)
• D
  72% (18)

Explanation

Full backups combined with differential backups (D) provide the fastest restoration time because recovery requires only two steps: restoring the most recent full backup, then applying a single differential backup containing all changes since that full backup. This minimizes the number of backup sets needed and eliminates chaining.

Why the others are wrong:

• A (Incremental + Differential): Neither strategy alone contains a complete baseline - you need a full backup as the foundation for any restore chain.
• B (Full + Incremental): Incremental backups only capture changes since the last backup of any type, so restoration requires the full backup plus every incremental in sequence - the more incrementals, the slower the restore.
• C (Partial + Incremental): Partial backups only cover a subset of data, making a full system restore incomplete or impossible without additional sets.

Memory tip: Think "Differential = Done in two" - one full restore + one differential = done. Incrementals chain like links; differentials collapse the chain into one step.

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