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Zorluk: KolayBusiness Continuity and Disaster Recovery

A network administrator performs a full system backup every Sunday at midnight, followed by daily differential backups every weekday night at 11:00 PM. If a catastrophic server drive failure occurs on Thursday afternoon, which set of backups must be restored to return the system to its latest backed-up state with minimal steps?

  1. The Sunday full backup followed by only the Wednesday differential backupCevap
  2. B
    The Sunday full backup followed sequentially by the Monday, Tuesday, and Wednesday backups
  3. C
    The Sunday full backup followed by only the Monday differential backup
  4. D
    Only the Wednesday differential backup

Cevap

The Sunday full backup followed by only the Wednesday differential backup
Differential backups save all files that have changed since the last full backup. Restoring the baseline Sunday full backup followed by the Wednesday differential backup completely restores the environment up to Wednesday night in just two restore operations.

Adım Adım Çözüm

1
Identify the backup strategy being used
The organization uses a Full backup combined with daily Differential backups.
Understanding how differential backups function is key to determining the correct restoration path.
2
Determine the data contained in a differential backup
A differential backup records all data modified since the last full backup, meaning Wednesday's differential contains all cumulative changes from Monday, Tuesday, and Wednesday.
Because each differential backup is cumulative from the full backup, earlier differential backups are superseded by the newest one.
3
Identify the optimal recovery sequence
Restore the Sunday full backup first to establish the baseline, then apply only the Wednesday differential backup to bring the system up to date.
This two-step process achieves complete restoration to the latest backup state with minimal recovery time.

Anahtar Kavram

Differential Backup Restoration Sequence
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Konular

Business Continuity and Disaster Recovery

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