Practice Quiz

CompTIA A+ 220-701/702 Practice Exam

Category - Essentials

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If a computer is not protected with a UPS, which of the following problems can occur when power is restored after a power failure?
  1. ROM needs to be programmed
  2. The CMOS RAM has a battery failure
  3. There is danger from a power surge
  4. The motherboard switch needs to be reset
Explanation
Answer - C - A power surge is likely when power is restored after a sudden power failure. This surge could fry and damage the components in the PC.

Key Takeaway: Computer components can withstand only a certain degree of power fluctuation. Although they have a primitive voltage regulator circuit, these are not equipped to withstand very high fluctuations. A UPS with voltage regulator circuitry is very important to protect the PC from power spikes.
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