File extension is a file type which is used to identify the file type. If you’re regular user on windows then you will have no problem to identify the file type. Here I will show you how to open file extension
Some security purpose you must to know file time before opening it as now-a-days hacker are using this tricks to access the systems.
If you see the yellow color while installing any software on your system I would recommend not to install as it can harm your computer as it keeps virus.
What are File Extensions & how are they used
Different file type have different file extension like audio file have .mp3 , .acc , .wav and more based on the program which is used to open that file .
By default , windows does not show the file extension and they are hidden
Now I will show you how to see hidden file extension
Open Control Panel > Appearance and Personalization . Now , click on Folder Options as it is now called > View tab. In this tab, under Advance Settings, you will see the option Hide extensions for known file types. Uncheck this option and click on Apply and OK.
Click on Apply then Ok
Now you can see file extension are shown