Alright kiddo, Imagine you are in a big playground with lots of kids and toys. Now, each group of kids playing with different kinds of toys in different areas of the playground.
A virtual network or "vnet" is like a big playground for computers instead of kids, where they can talk to each other and share things like files and information. But like in the playground, the computers need to be separated and organized into different groups, so they can play in their own areas and not get confused with each other.
Just like the playground has fences and gates to separate different areas, a virtual network also has something called "subnets". Each subnet is like a separate area within the network where computers located together have their own unique addresses.
So, if you want two computers to talk to each other, they need to be on the same subnet, just like two kids playing together in the same area of the playground.
In summary, a vnet is like a big playground for computers, and subnets are like separate areas within the playground where the computers can play together and communicate.