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Zorluk: OrtaBusiness Continuity and Disaster Recovery

A system administrator is restoring an enterprise Network Management System (NMS) server after a storage volume corruption on Friday at 09:00. The established backup strategy executes a full backup every Sunday at 00:00 and differential backups every evening at 23:00 from Monday through Thursday. To achieve complete recovery to the latest available state with minimal restoration steps, which backup restoration sequence must be executed?

  1. Restore the Sunday full backup first, then restore only the Thursday differential backup.Cevap
  2. B
    Restore the Sunday full backup first, followed sequentially by the Monday, Tuesday, Wednesday, and Thursday backups.
  3. C
    Restore only the Thursday differential backup directly to the target storage volume.
  4. D
    Restore the Thursday differential backup first, and then apply the Sunday full backup to populate missing baseline files.

Cevap

Restore the Sunday full backup first, then restore only the Thursday differential backup.
Differential backups save all modified files since the last full backup without resetting the archive attribute. Restoring the baseline full backup from Sunday establishes the system foundation, and applying the Thursday differential backup updates all files to their state prior to the failure in the minimum number of recovery steps.

Adım Adım Çözüm

1
Identify the baseline full backup requirement.
The Sunday 00:00 full backup provides the fundamental operating system, service configuration, and baseline data.
All recovery procedures using differential or incremental strategies require restoring the baseline full backup first.
2
Determine the characteristics of differential backups.
Each differential backup captures all changes made since the Sunday full backup without clearing the archive bit.
Because changes accumulate, the Thursday differential backup contains all modifications from Monday, Tuesday, Wednesday, and Thursday.
3
Select the minimal restoration sequence.
Restoring the Sunday full backup followed by the Thursday differential backup completely recovers the system state.
This two-step process minimizes recovery time and avoids redundant restore tasks.

Anahtar Kavram

Differential Backup Restoration Mechanics
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Konular

Business Continuity and Disaster Recovery

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