A) limits damage caused by fluctuating levels of electricity
B) Provides battery backup for a limited time
C) Delivers electronic messages via a bus
D) Conducts a power-on self-test, or POST
E) None of these
Correct Answer: B
Solution :A UPS (uninterruptible powers supply)is a backup device that allows your computer to keep Running for at least a short time when the primary power source is lost. It also provides protection from power surges. When power surges occur, a UPS intercepts the surge so that it doesn?t damage your computer.
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