Additionally, state briefly what is a file extension to be and what its purpose is. identify three file extensions that you see and which software applications may have created them. Hint: By simply...

Additionally, state briefly what is a file extension to be and what its purpose is.  identify three file extensions that you see and which software applications may have created them. Hint: By simply right-clicking on a selected file and from the pop-up menu selecting properties (Microsoft Windows environment), the file extension for most files should be displayed.