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!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

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.