What backup method is employed by the Mac OS Extended (Journaled) format?

The Mac OS Extended (Journaled) format employs journaling as its primary backup method. Journaling is a technique that helps maintain the integrity of the file system by keeping a record of changes that will be made to files and directories before the actual changes occur. This means that if a system crash or power failure occurs during a write operation, the journal can be used to recover the file system to a consistent state.

By using journaling, the file system can quickly recover from crashes without running into severe corruption issues. It minimizes the risk of data loss and contributes to a more reliable and robust storage solution. Journaling keeps track of both metadata and file contents, thereby ensuring that even during unexpected interruptions, data remains consistent and intact upon the next reboot or mount of the volume.

Other backup methods, such as snapshots, incremental, and full, represent different strategies in data management and backup systems generally rather than the specific function of journaling in the Mac OS Extended (Journaled) format. These options focus on how data can be saved and restored but do not relate directly to how the Mac OS Extended (Journaled) file system maintains safety and integrity during regular operations.