COMPTIA A+ Practice Exam

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Prepare for the COMPTIA A+ Exam. Test your knowledge with our flashcards and multiple choice questions, complete with hints and explanations. Ensure you're ready for exam day!

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What is the data rate of a standard CD?

150 KB/sec
300 KB/sec
450 KB/sec
600 KB/sec

The correct answer is: 150 KB/sec

The data rate of a standard CD is 150 KB/sec. This is because a standard CD has a capacity of 700 MB, which means it can hold 700,000 KB of data. To determine the data rate, we divide the capacity (700,000 KB) by the maximum playing time (74 minutes or 4,440 seconds). This results in a data rate of approximately 157 KB/sec, but since CDs use error correction techniques, the actual data rate is 150 KB/sec. The other options are incorrect because they are not the actual data rate of a standard CD. Option B is closer to the calculated data rate, but it disregards the error correction techniques used in CDs. Options C and D are higher data rates, but they are not the standard rates for CDs.