Learn Internet/Web

The Internet is a global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link several billion devices worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope, linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents and applications of the World Wide Web (WWW), electronic mail, telephony, and peer-to-peer networks for file sharing.

Wikipedia

Learn Internet/Web - 图1

Image source: https://www.helloitsliam.com/2014/12/20/how-the-internet-works-infographic/

Learn Internet/Web - 图2

Image source: http://www.bitrebels.com/technology/find-out-who-runs-the-internet-chart/