Which backup type copies only changes since the last backup?

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Multiple Choice

Which backup type copies only changes since the last backup?

Explanation:
Incremental backups copy only what has changed since the last backup. After a baseline full backup, each subsequent backup stores just the data that was added, modified, or deleted since the previous backup, making these backups smaller and faster to create. To restore, you need the initial full backup plus every incremental backup in order because each increment builds on the previous state. This differs from differential backups, which copy changes since the last full backup and grow larger over time, and from full backups that copy everything, or mirror backups that strive to be an exact, up-to-date clone.

Incremental backups copy only what has changed since the last backup. After a baseline full backup, each subsequent backup stores just the data that was added, modified, or deleted since the previous backup, making these backups smaller and faster to create. To restore, you need the initial full backup plus every incremental backup in order because each increment builds on the previous state. This differs from differential backups, which copy changes since the last full backup and grow larger over time, and from full backups that copy everything, or mirror backups that strive to be an exact, up-to-date clone.

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