a) Lossy vs Lossless

Define compression

This is the process used to reduce the storage space required by a file.

What does compression allow you to do?

Store more files per unit storage space.

Why is compression used for data transmission?

It reduces transmission time as the files are smaller.

What are the two types of compression?

Lossy vs lossless

Define lossy compression

Reduces the file size whilst irreversibly removing its data.

What does lossy compression do with an image?

It reduces its file quality and makes the image more pixelated.

Define lossless compression

The reduction of a file size with no loss of quality.

With which type of compression can the original file be recovered?

Lossless.

What compression do you use for audio files?

Lossy

What compression do you use for word compression?

Lossless