How to find your subnet mask

There are many methods to find subnet mask but i am sharing the easy one to you 

Step -1 Open your computer home screen and from your keyboard hold window button and press R button it will open like this 

Step -2 Now open command prompt by typing CMD in the box and press ok button it will open like this 

Step – 3 Type ipconfig and press enter and scroll down finally you can see your subnet mask