Future Business Leaders of America (FBLA) Cybersecurity Practice Test

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Prepare for the FBLA Cybersecurity Exam. Study with flashcards and multiple-choice questions. Each question includes hints and explanations to help you excel. Get exam-ready now!

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What type of backup operation copies only the data that has changed since the last full backup?

Differential Backup
Incremental Backup
Full Backup
Mirror Backup

The correct answer is: Differential Backup

The type of backup operation that copies only the data that has changed since the last full backup is known as a differential backup. In this method, the backup process captures all changes made since the most recent full backup, which allows for quick restoration of data based on the full backup and the latest differential backup. This approach is efficient because it reduces the amount of data being backed up during each session compared to a full backup, while still ensuring that all changes are accounted for. As a result, the restoration process can be simpler than with incremental backups, which require restoring multiple backup sets (the last full backup and all subsequent incremental backups) to retrieve complete data.