There are various protocols for transferring data over the Internet and other networks. Every time you type the address of the site in the address bar of the browser, "http: //" is automatically added at the beginning. This is how the HTTP protocol (HyperText Transfer Protocol) is marked. This protocol is used to transfer to the user HTML-pages and related elements such as graphics, flash movies, scripts, etc. from the server. Besides that, it often transfers files that the user downloads to their computer.