What is data backup?

• A. A copy of data stored separately to recover quickly after data loss or corruption.
• B. An unnecessary step in data management.
• C. A method to replace all old data with new data automatically.
• D. A process to anonymize data for marketing.

Answer: (A)

Data backup is about making copies of important data and storing them separately from the original files so you can recover quickly if something goes wrong. Keeping a backup in a different location, such as an external drive or the cloud, helps ensure you still have access to your information even if the main system fails, is corrupted, or is hit by a cyberattack. The goal is fast restoration with minimal data loss, so you can resume operations as soon as possible.

This isn’t an unnecessary step, and it isn’t about automatically replacing old data with new data. It also isn’t about anonymizing data for marketing—the backup purpose is protection and recovery, not privacy filtering.