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220-1102 · Question #70

A technician is setting up a backup method on a workstation that only requires two sets of tapes to restore. Which of the following would BEST accomplish this task?

The correct answer is A. Differential backup. A differential backup system requires only a full backup and the latest differential backup to restore all data, making it efficient with two sets of tapes.

Operational Procedures

Question

A technician is setting up a backup method on a workstation that only requires two sets of tapes to restore. Which of the following would BEST accomplish this task?

Options

  • ADifferential backup
  • BOff-site backup
  • CIncremental backup
  • DFull backup

How the community answered

(31 responses)
  • A
    77% (24)
  • B
    6% (2)
  • C
    13% (4)
  • D
    3% (1)

Why each option

A differential backup system requires only a full backup and the latest differential backup to restore all data, making it efficient with two sets of tapes.

ADifferential backupCorrect

A differential backup backs up all data that has changed since the last full backup. To restore, only the original full backup and the most recent differential backup are needed, fulfilling the requirement of using only two sets of tapes for restoration.

BOff-site backup

Off-site backup refers to the storage location, not the backup method itself or the number of tapes needed for restoration.

CIncremental backup

An incremental backup backs up data changed since the last backup (full or incremental), requiring the original full backup and all subsequent incremental backups for a full restore, which would be more than two sets.

DFull backup

A full backup creates a complete copy of all data, but if daily changes occur, restoring from only one full backup set means data from between full backups would be lost, and it doesn't align with the 'two sets of tapes to restore' requirement for combined daily backup strategy.

Concept tested: Backup strategies (Differential backup)

Source: https://learn.microsoft.com/en-us/windows-server/administration/windows-server-backup/what-is-windows-server-backup#full-incremental-and-differential-backup

Topics

#Backup methods#Data backup#Differential backup#Data restoration

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