What is a Computer Network ?

A computer network is formed when a device is connected to other devices that form a communication relationship so that these devices can communicate, exchange data between other devices, well it can be said that a computer network is like a relationship between humans where they communicate with each other and establish relationships.

For example, as above there are 2 computers that are connected in one node (the transmission medium that connects can be wired or wireless). a solid foundation to deepen it.