What is the primary advantage of differential backups compared to full backups?

• A. They require less storage space
• B. They speed up the restoration process
• C. They minimize the amount of data backed up each time
• D. They only need to be performed once a month

Answer: (C)

Differential backups are advantageous because they capture only the data that has changed since the last full backup, rather than including all data like a full backup does. This means that each time a differential backup is performed, only the differences are included, which typically results in a smaller amount of data being backed up compared to a full backup. As a result, organizations can save on storage space and reduce the time required to complete each backup process, allowing for more frequent backups without consuming excessive resources.

This approach also has implications for the restoration process, as the restoration would require the latest full backup and the most recent differential backup. However, the primary benefit remains the efficiency of capturing only the changes, leading to optimized storage usage and backup times.