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Which of the following should be used to prevent this f…

A company recently experienced data loss when a server crashed due to a midday power outage.
Which of the following should be used to prevent this from occurring again?

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A.
Recovery procedures

B.
EMI shielding

C.
Environmental monitoring

D.
Redundancy

Explanation:
Redundancy refers to systems that either are duplicated or fail over to other systems in the event of a
malfunction (in this case a power outage). Failover refers to the process of reconstructing a system or switching
over to other systems when a failure is detected. In the case of a server, the server switches to a redundant
server when a fault is detected. This strategy allows service to continue uninterrupted until the primary server
can be restored.

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