A system administrator is creating a backup schedule. Which of the following is a best practice to ensure the data is backed up, based on a five-day business week ?

Performing a full backup on Sunday establishes a clean, complete baseline each week, while incremental backups on each business day capture only data changed since the most recent backup - whether full or incremental - keeping daily jobs fast and storage-efficient. This strategy is recognized best practice because it balances recovery point objectives, storage consumption, and backup job duration across a five-day week. Restoring requires the Sunday full backup plus each incremental in sequence up to the desired recovery point.

Running an incremental on Sunday provides no full baseline for the week, making restoration require reassembling every incremental indefinitely with no guaranteed clean starting point, while differentials grow progressively larger each business day.

Snapshots are storage-system-level point-in-time copies that depend on the underlying volume infrastructure and are not a portable full backup baseline suitable for a standard weekly schedule.

An incremental on Sunday still provides no full backup foundation, and daily snapshots on business days are storage-dependent and cannot substitute for a restorable, media-independent backup set.