Explain in detail what you consider a file extension to be and what function you think it fulfills. Go to a random folder on your computer and name three file extensions you see there, as well as any...

Explain in detail what you consider a file extension to be and what function you think it fulfills. Go to a random folder on your computer and name three file extensions you see there, as well as any software programs that may have produced them. Most file extensions should be shown by simply right-clicking on a chosen file and choosing properties from the pop-up menu (Microsoft Windows environment).