what are the advantages og using COMPACT DISC as storage media?

Answer 1

Advantages: Blank CDs are very cheap, and almost every computer made these days has a CD burner.

Disadvantages: CDs are outdated technology for data storage. You can fit much more information on a DVD (a little pricier than a CD, and you need a DVD burner) or on a USB flash drive (which are expensive, but can be used over and over, hold a LOT, and are usually small enough to keep on a keychain).

Answer 2

By savind work on a cd
1: you can have a backup of your work
2: you wont take up memory on your hard drive if you save directly to a cd.