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Which of the following backup method must be made regar…

Which of the following backup method must be made regardless of whether Differential or Incremental methods
are used?

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A.
Full Backup Method.

B.
Incremental backup method.

C.
Supplemental backup method.

D.
Tape backup method.

Explanation:
A Full Backup must be made regardless of whether Differential or Incremental methods are used.
The Full Backup Method makes a complete backup of every file on the server every time it is run. The full
backup will reset the archive bits on all the files that were backed up. The archive bits are used by incremental
and differential backups to determine which files have been changed since the full backup and therefore, which
files need to be backed up.
Incorrect Answers:
B: Incremental backups back up all files that were changed since the last full or incremental backup. You do not
have to use incremental backups.
C: “Supplemental” is not the backup type that must be made regardless of whether Differential or Incremental
methods are used. A supplemental backup is an ‘extra’ or ‘additional’ backup; it is not part of the regular
backup schedule.
D: The tape backup method is not one of the defined backup types; it just specifies that the files are backed up
to tape.

Krutz, Ronald L. and Russel Dean Vines, The CISSP Prep Guide: Mastering the Ten Domains of Computer
Security, John Wiley & Sons, New York, 2001, p. 69


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