Internet is a massive global network of sub-networks...
And explaining the exact technicalities of how it works would take a whole series of in-depth posts; as there are so many dependent technologies.
But for a simple outline of how it all connects together, take a look at this diagram:
You can see from this diagram that:
- A network is a cluster of computers that can talk to each other.
- The internet is a vast global network of inter-connected networks.
- A web-server is a computer that ‘hosts’ websites and makes them available to the internet.
- There can be 00’s or 000’s of Websites on a single web server – or conversely, a big website can need multiple servers.
- ISP’s connect to the global web network via very fast dedicated data connections.
- ISP’s send data up and down your phone/cable line to your modem/router.
- Your router acts as a hub for several PC’s to access your home network and share the internet connection.
- Wireless 'WiFi' enables connections for Handheld devices/Smartphones (like iPhones & iPads etc.)
- A PC uses a computer application called a browser to communicate with the internet. A Browser understands the languages that a web-page uses to 'draw' itself and provide interactivity. There are many languages, but the most basic are HTML & CSS.
- You interact with the web-page and the browser sends hyperlink clicks, data and requests for more information down the line to the web-server - which then communicates back with more data, which can be text, pictures, audio & video etc.
- Search Engines are commonly used to find what we want on the internet. Google is the best known example.
The Wikipedia definition: “The World Wide Web, abbreviated as WWW or W3 and commonly known as the Web, is a system of interlinked hypertext documents accessed via the Internet. With a web browser, one can view web pages that may contain text, images, videos, and other multimedia and navigate between them via hyperlinks.”
0 মন্তব্যসমূহ