Hypertext Transfer Protocol (HTTP) is used by web servers to
communicate web pages to web browsers. HTTP is used when your
browser connects to a web server, requests a web page from the
server, and downloads the page. It common standard that enables
any browser to connect to any server, anywhere in the world.
HTTP was originally designed by Tim Berners-Lee to support the
special demands of web communications, with an emphasis on
efficiency, and a target page load time of under a tenth of a
second. Modern Internet networks support this type of response
provided the page isn't too large and the server browser can
open more than one HTTP connection at once to download different
parts of a web page, downloading the text, graphics, and other
objects on the page in different orders. That is why you may see
the status messages in the bottom of your browser window switch
between a message like "downloading 62% of 15K" to "downloading
38% of 47K" on the same page -- there are different HTTP
connections. enable you to