COMPTIA A+ Practice Exam

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Ace your COMPTIA A+ certification with our practice exam. Engage with a variety of questions including multiple choice and performance-based, complete with hints and detailed explanations. Prepare effectively and boost your confidence for the big day!

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What is achieved by Active PFC?

Data encryption
Battery charging
Elimination of harmonics
Improved network performance

The correct answer is: Elimination of harmonics

Active PFC, or Active Power Factor Correction, is a technique used in electronics to improve the power factor of a device. This means that it reduces the amount of harmonics produced by the device, resulting in a more efficient use of electrical power. Options A, B, and D are all unrelated to power factor correction and therefore are incorrect. Option A, data encryption, is a method of securing data, option B, battery charging, refers to the process of recharging a battery, and option D, improved network performance, relates to the efficiency and speed of data transmission in a network. None of these options have any connection to Active PFC. Therefore, the correct answer is C Elimination of harmonics.