Which of the following concepts describes the process of taking turns with backup tapes so that you have multiple backup tapes?

A.
Tape rotation.

B.
Autoloader.

C.
Data restore.

D.
System recovery.

Explanation:
Tape rotation refers to the process of rotating backup tapes. This assists in preventing data loss because you will have multiple backup tapes in the rotation.
Incorrect
Answers:
B: When multiple-drive tape systems are used, autoloaders are the devices that can be used to streamline the process of changing and replacing backup tapes. Autoloaders can automatically change backup tapes from their attached storage libraries. This assists in reducing the number of times you have to manually load backup tapes into single-drive tape devices.
C: Data restore describes the process of recreating files and data from backup tapes onto the original drive, on an alternate location, or under a different name.
D: System recovery describes the process of repairing/replacing malfunctioning

hardware prior to reloading the operating system. Once the operating system is functioning, you can use data restore to recreate the necessary files and data.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 378-380.