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Which backup operations clear the archive bit after the file has been backed up? (Select two)
A. copy
B. normal
C. differential
D. incremental
Correct Answer: BD
Explanation/Reference:
Industry Standard Architecture – Student Guide 2 – Page 194
Full
In a normal full backup, all specified files are backed up regardless of the value of the archive bit. After a file is backed up, its archive bit is turned off. A copy full backup also backs up all of the files but does not turn off, or clear, the archive bit. A full backup takes the longest to perform.
Incrementa
In an incremental backup, only the new or changed files with the archive bit set on are backed up. After a file is backed up, its archive bit is turned off, or cleared. An incremental backup takes much less time to perform than the full backup, but more than the differential backup.
Differential
In a differential backup, only the new or changed files with the archive bit set on are backed up. After a file is backed up, the setting of its archive bit is NOT changed. A differential backup initially takes the least amount of time to perform, but the time it takes increases as more and more files are included.
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