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A customer currently performs full backups to disk every week. They want less space to be used for each backup. Which strategy uses the least amount of space?
A. incremental backups
B. synthetic full backups
C. virtual full backups
D. differential backups
Correct Answer: A
Explanation/Reference:
An incremental backup provides a backup of files that have changed or are new since the last incremental backup or full backup
http://support.microsoft.com/kb/136621
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