Incremental backup does
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Copies all files that are selected for backup
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Copies every file on the system that was modified or added since the previous backup, keeping the archive bit switch on
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Copies every file on the system that has archive bit switched on, and switch off the archive bit after the backup is complete
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Copies all the files that have been generated since the last backup
Reveal answer
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C
Correct answer
Explanation
Incremental backup copies only files with their archive bit set (indicating they've changed since the last backup), then resets the bit to mark them as backed up. This is efficient because only changed files are copied. Differential backup keeps the archive bit on, copying all changes since the last FULL backup.