What is internet?
Internet is a network among all computers not only laptops as well as printers, remote web cameras, electric devices. Put simply, the internet moves computerized information (known as data) from one place to another. Once your computer connects to wi-fi or internet cable, you will be joining on the internet network and able to send data to the other. On this network, nobody owns this network system but ISPs (Internet Service Providers) let your computers connect to the network.
History of Internet
1969: The ARPANET computer network is launched, initially linking together four scientific institutions in California and Utah.
1974: Vinton Cerf and Bob Kahn write an influential paper describing how computers linked on a network called an "internet" could send messages via packet switching, using a protocol called TCP (Transmission Control Protocol).
1978: TCP is improved by adding the concept of computer addresses (Internet Protocol or IP addresses) to which Internet traffic can be routed. This lays the foundation of TCP/IP, the basis of the modern Internet.
1982–1984: DNS is developed, allowing people to refer to IP addresses with domaine names.
1989: Tim Berners-Lee invents the World Wide Web at CERN, the European particle physics laboratory in Switzerland. It owes a considerable debt to the earlier work of Ted Nelson and Vannevar Bush.
What is LAN?
LAN stands for local area networking. It is not internet but local network which allows you to connect to other devices on same network (typically in same building or school). Internet is connected to a router device and the router is connected to your computer.
Wi-Fi is Wireless LAN(WLAN) base on IEEE 802.11 that is International standard of wireless LAN.
Wi-Fi most commonly uses the 2.4 gigahertz and 5.8 gigahertz
What is web?
The Web is a network or a system and a way we organize information on the internet using Hyper Text Link structure. Before the web, the system uses tree structure to organize data which is linear and inefficient. Instead of organizing information in tree structure with hierarchy, Tim proposed Hyper Text Link as new structure which does not have hierarchy. Now people open the website and click the link. That is Hyper Text Link and the beginning of the web. The protocol to obtain "Hyper Text Link" content called HTML is HTTP (Hyper Text Transfer Protocol). HTTP is used for nothing more than sending HTML file.
Things like Telnet, FTP, Internet gaming, and e-mail are all part of the Internet, but are not part of the World Wide Web.
Now your laptop is connected to internet through Wi-Fi or cable LAN and opens browser application. What happened when you type 'google.com' and press enter. You are accessing web at this moment and getting HTML from the server through the Internet.
What is Bandwidth?
Bandwidth is the range of
https://www.w3.org/History/1989/proposal.html