Internet, Web and the Internet of Things

The Internet is not just a network of computers. It is the global network of computing devices — that includes desktops, laptops, servers, tablets, mobile phones, printers, scanners, routers, switches, and gateways. But the list does not stop there. Smart electronic appliances like TVs, air conditioners, refrigerators, fans, and lights can also communicate through a network. Drones, vehicles, door locks, and security cameras are all part of this expanding web of connected things. You have already studied IoT (Internet of Things) and WoT (Web of Things) in Class 11.

The architecture of the Internet is evolving every day, and it is difficult to describe every aspect of it in a fixed way. However, the basic connection path is clear. Computers connect to a modem — either through a cable or wirelessly (Wi-Fi). That modem, whether wired or wireless, connects to a local Internet Service Provider (ISP). That ISP then connects to a national network. Many ISPs join together to form a regional network, and regional networks join to form a national network. These country-wide networks together form the Internet backbone.