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!

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What formula is used to calculate disk size?

# of Cylinders * Heads * # of sectors/track * 512bytes/sector
# of Cylinders + Heads + # of sectors/track * 512bytes/sector
# of Cylinders * Heads / # of sectors/track * 512bytes/sector
# of Cylinders * Heads - # of sectors/track * 512bytes/sector

The correct answer is: # of Cylinders * Heads * # of sectors/track * 512bytes/sector

The formula used to calculate disk size is the product of three factors the number of cylinders, the number of heads, and the number of sectors per track. This is because the total size of a disk is determined by the number of tracks on each head, the number of heads, and the number of sectors per track. Options B, C, and D are incorrect because they either add, divide, or subtract instead of multiplying these three essential factors. This would result in an incorrect calculation of the disk size.