# How the internet works The **internet** is a giant network of networks — computers talking using agreed rules (**protocols**). ## Simple trip of a website 1. You type `wonderlearn.co.in` 2. **DNS** finds the computer’s address (like a phone book) 3. Your request travels through Wi-Fi / cables 4. A **server** sends the page back 5. Your **browser** draws the page ## Useful words - **Browser** — Chrome, Edge, Firefox, Safari - **URL** — the page address - **Wi-Fi** — wireless local connection - **Download** — file comes to you - **Upload** — you send a file out ## WWW vs internet The **World Wide Web** is the pages and links. The internet is the roads. Email and games also use the internet, not only websites. > Picture: you (client) order food. The restaurant (server) sends the meal along roads (network). ## Packets, not one giant parcel A page is chopped into small **packets**. Each packet finds a path. They are rebuilt at your end. That is why a video can start before the whole file arrives. ### Words to keep straight | Word | Meaning | | --- | --- | | Internet | The roads — many networks joined | | WWW | Pages + links that use those roads | | Browser | The app that draws pages | | URL | The address of a page or file | | DNS | Name → number lookup | | Server | Computer that answers requests | | Client | Computer that asks | | Wi-Fi | Wireless local link to a router | ### Food-order picture You (client) order. The restaurant (server) cooks. Roads (internet) carry the box. The menu website is the WWW. DNS is the phone book you used to find the restaurant’s number.