What is a backup?

A. An exact copy of a system's information.
B. The ability to get a system up and running in the event of a system crash or failure and includes
restoring the information backup.
C. A computer system designed that in the event a component fails, a backup component or procedure can
immediately take its place with no loss of service.
D. A backup operational mode in which the functions of a computer component (such as a processor,
server, network or database) is assumed by secondary system components when the primary component
becomes unavailable through either failure or scheduled down time.


A. An exact copy of a system's information.

Business

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