By Internet we mean the Internet , a large network system consisting of a myriad of networks spread across the globe. In a word , the Internet is one of the many network systems scattered around the world. The Internet was created to build the US Department of Defense's internal communications system. The Internet is currently the largest network in the world. How the Internet works In the first case, a computer connects to different types of networks. That network is called the Internet. For example , your smartphone communicates with an ISP or Internet service provider, and then connects itself to the Internet through that ISP. This is how the internet usually works.