AS Revision File Compression Quiz

Which of the following is a feature of lossless file compression?

• It removes some data permanently

• Original data cannot be reconstructed

• It reduces audio quality

• No data is lost during compression

Which compression technique is suitable for text files where every character is important?

• Lossy

• Lossless

• JPEG

• MP3

What does MP3 file compression eliminate using perceptual music shaping?

• Loud sounds

• Stereo channels

• Frequencies outside human hearing

• Voice tracks

Which of these file formats typically uses lossy compression?

• .txt

• .bmp

• .mp3

• .svg

Which is an example of a lossless file compression method?

• JPEG

• MP3

• Run-Length Encoding

• MP4

What is the primary benefit of MP3 compression?

• Increased fidelity

• File expansion

• 90% reduction in file size

• Reversible format

MP4 files are used to store:

• Only text

• Only sound

• Only video

• Multimedia (sound, video, images)

Which factor affects the quality of MP3 files?

• Compression type

• File name

• Bit rate

• Video resolution

Which of the following is not removed by perceptual music shaping?

• Frequencies humans can't hear

• Background noise

• Louder sounds

• Softer overlapping sounds

What is the bit rate range typically used for MP3 files?

• 10–80 kbps

• 80–320 kbps

• 512–1024 kbps

• 5–10 Mbps