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AZ-305 · Backup and disaster recovery

Practice question 203 of 400 · hard

A SQL native backup plan has a full baseline, a later differential, and several transaction logs. One required log segment is missing. What is the correct recovery consideration?

Choose the single best answer.

  1. A.Only the newest VM snapshot proves every selected-time database restore is possible
  2. B.Differential backups contain every change since the last log regardless of baseline
  3. C.Any later log can always be applied directly to an empty database
  4. D.Restore precision depends on a valid applicable baseline/differential/log chain; a missing required segment can limit the target time
Show the answer and explanation

✓ Correct answer

  • Restore precision depends on a valid applicable baseline/differential/log chain; a missing required segment can limit the target time

A valid chain determines reachable points. Logs require the proper database chain rather than an empty baseline; a differential relates to its full baseline. VM snapshots are different from proving SQL log continuity. Source guide: PDF page 39.

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