Compression

Define the term 'compression'

• When a file is reduced in size

• When a file size is increased

Define the term 'lossy compression'

• When the file is compressed no data is removed, there is no loss of quality when the file is reconstructed.

• When the file is compressed, data is permanently removed, when reconstructed this leads to a loss of quality.

Define the term 'lossless compression'

• When the file is compressed no data is removed, there is no loss of quality when the file is reconstructed.

• When the file is compressed, data is permanently removed, when reconstructed this leads to a loss of quality.

Which of these is a lossless compression file type for images?

• PNG

• JPEG

Which of these is a lossless compression file type for audio?

• MP3

• FLAC

Which of these is a lossy compression file type for audio?

• MP3

• FLAC

Which of these is a lossy compression file type for images?

• PNG

• JPEG

What is the advantage of compressing files on websites?

• The website will download quicker

• The website takes up less space