. A computer network is formed by two or more devices connected together, these devices might be connected to share data to do some computations together or to share the resources. For example, a simple network where two computers are connected and one printer is connected and these both computers want to give command to the printer. So Resource Sharing is happening Do you do computer networks, computer networks are in fact everywhere they are in our office, they are in our home. In home, we might have multiple devices like laptops, Alexa, or other devices which are connected in a network. in office, you often see networks, your computers connected through a switch or any other device like router, and they form a network. So there are many, many networks that exist. In this course, we are going to focus mainly on internet, the largest network, almost half of the world's population is connected to the internet. In fact, most of our home devices, our office devices, they are connect...