Which term describes a backup approach that uses the most storage but offers the simplest restore process?

Which term describes a backup approach that uses the most storage but offers the simplest restore process?

• A. Full Backup
• B. Incremental Backup
• C. Differential Backup
• D. 3-2-1 Backup Rule

Answer: (A)

Backups vary in how much data they copy and how easy the restore is. The full backup approach copies every file and data set in one operation, so it uses the most storage because nothing is skipped. The upside is that restoring is straightforward—you only need that one backup to recover everything, with no need to combine data from multiple backups. In contrast, incremental backups only save changes since the last backup, so restoring requires you to apply a chain: the full backup plus every subsequent incremental. That makes the restore process more complex and longer. Differential backups save all changes since the last full backup, so restoration needs the last full backup plus the most recent differential, which is simpler than the incremental method but still more involved than a single full backup. The 3-2-1 backup rule is a resilience guideline (three copies, on two media, with one offsite) rather than a single backup type, so it doesn’t directly describe storage usage or restore simplicity.

Backups vary in how much data they copy and how easy the restore is. The full backup approach copies every file and data set in one operation, so it uses the most storage because nothing is skipped. The upside is that restoring is straightforward—you only need that one backup to recover everything, with no need to combine data from multiple backups. In contrast, incremental backups only save changes since the last backup, so restoring requires you to apply a chain: the full backup plus every subsequent incremental. That makes the restore process more complex and longer. Differential backups save all changes since the last full backup, so restoration needs the last full backup plus the most recent differential, which is simpler than the incremental method but still more involved than a single full backup. The 3-2-1 backup rule is a resilience guideline (three copies, on two media, with one offsite) rather than a single backup type, so it doesn’t directly describe storage usage or restore simplicity.