1.3 Lossy and lossless compression methods

What is a characteristic of MP3 compression?

• It is a lossless compression method.

• It can reduce the size of a music file by as much as 90%.

• It removes all sounds from the audio file.

• It is primarily used for text-based data compression.

Which of the following is a key principle behind JPEG compression?

• It focuses on removing sounds outside the range of human hearing.

• It separates pixel color from brightness to discard certain information.

• It uses Huffman coding to compress text-based data.

• It ensures the original file can be perfectly reconstructed after compression.

Which lossless compression method is typically used for bitmap images by encoding contiguous sections of pixels?

• Huffman coding

• JPEG

• Run-length encoding (RLE)

• MP3

What is a fundamental difference between lossy and lossless compression?

• Lossy compression allows the original file to be perfectly reconstructed.

• Lossless compression eliminates unnecessary data from the file.

• Lossy compression is exclusively used for image files.

• Lossless compression allows all data from the original uncompressed file to be reconstructed.