What is the main advantage of using incremental backups?

The main advantage of using incremental backups is that they combine several benefits, which makes option D the most accurate choice. Incremental backups are designed to only back up the data that has changed since the last backup, whether that was a full backup or another incremental backup.

This approach leads to increased speed and efficiency because it significantly reduces the amount of data that needs to be processed and transferred during each backup session. As a result, backup operations can be completed more quickly, minimizing the impact on system performance and user productivity.

Moreover, because only the changes are being stored, incremental backups typically require less storage space than full backups. By saving only the latest changes, less disk space is consumed over time, which helps optimize storage use and can lower costs associated with physical storage devices.

Lastly, while incremental backups do cover all the file changes made since the last backup (thus providing comprehensive data coverage), this coverage relies on the existence of the most recent backup sets to reconstruct the entire data set. In essence, although they do not cover data in the way that a full backup does, their efficiency complements the backup strategy, enabling restoration processes to be handled more effectively.

Overall, the speed and efficiency, reduced storage requirements, and effective coverage of changes make incremental backups