Which two types of tape backup methods clear the archive bit after the backup has been completed

Step 1: Understand the types of tape backup methodsu000Au002D Full backup: A full backup copies all sele

Which two types of tape backup methods clear the archive bit...

Key Concepts

Tape Backup Methods

Tape backup methods are strategies used for copying data from primary storage systems to magnetic tape for archival, long-term storage, or disaster recovery purposes. These methods vary in how they manage data, particularly in terms of which files are backed up during each cycle and whether file attributes, such as the archive bit, are reset post-backup.

Full Backup

A full backup method involves copying all selected files regardless of whether they have been modified since the last backup. This type of backup typically clears the archive bit for each file once the backup is complete, marking them as having been backed up. Although comprehensive, full backups generally require more storage and take longer to execute compared to other methods.

Incremental Backup

An incremental backup method only copies files that have been modified since the last backup that cleared the archive bit. This results in significantly reduced backup times and storage usage while ensuring that all updated files are saved. The incremental backup process inherently clears the archive bit for backed up files, preparing the system for the next cycle of changes.

Archive Bit

The archive bit is a file attribute used by backup systems to indicate whether a file has been modified since it was last backed up. When a file is created or altered, the bit is set, and during certain backup processes—such as full or incremental backups—it is cleared to reflect that the file has been included in a backup. This mechanism helps in identifying new or changed files for subsequent backups.

Which two types of tape backup methods clear the archive bit after the backup has been completed? A. Full B. Differential C. Incremental D. GFS

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