CISSP Practice question #180

What do we use to prevent power fluctuations?
A: EMI.
B: UPS.
C: CPU.
D: Batteries.

CBK 3: Security Engineering
Source: ThorTeaches.com practice tests

Answer


B: UPSs (Uninterruptible Power Supplies): Ensure constant clean power to the systems. Have large battery banks that take over in the event of a power outage; they also act as surge protectors.

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24 Comments

  1. But UPS’s often HAVE batteries to assist keeping the power stable! So it’s B and D!

    And if you’ve got a limited power budget in the facility, you might want to limit cpu speeds over the server farm. so C too!

    and EMI only had that one hit after Unbelievable.

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