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 the original format of audio CDs known as?

MP3
WAV
CDDA
AAC

The correct answer is: CDDA

Audio CDs were originally known as Compact Disc Digital Audio (CDDA). MP3, WAV, and AAC are all digital audio formats that can be stored on CDs, but they are not the original format of audio CDs. MP3 and AAC use compression to reduce file size, while WAV files are uncompressed. However, CD audio is stored in a format called PCM (pulse-code modulation) which is a type of uncompressed digital audio. Therefore, the original format of audio CDs is CDDA.