How The World Wide Web Works

How The Web Works

Browser Connects& Requests a Page

Server Sends BackThe Requested Page

How does it know where to look?Anatomy of a Uniform Resource Locator (URL)

http://www.chuckscoggins.com/index.html

Anatomy of a URL

http://www.chuckscoggins.com/index.html

The Protocol(Hypertext Transfer Protocol)

Anatomy of a URL

http://www.chuckscoggins.com/index.html

The Location (Web Server)

The Domain Name Server (DNS) translatesthe domain name into an IP address.

Anatomy of a URL

http://www.chuckscoggins.com/index.html

74.53.24.242

Anatomy of a URL

http://www.chuckscoggins.com/index.html

The File Name

Anatomy of a Web Page

The file that is sent from the web servercontains hypertext markup information.

HTML

Say What!??!

The file that is sent from the web servercontains hypertext markup information.

HTML

Say What!??!

The file that is sent from the web servercontains hypertext markup information.

HTML

the web page you want to view

Say What!??!

The file that is sent from the web servercontains hypertext markup information.

HTML

Across the internet, translated into electrical signals(1’s and 0’s) that get sent across wires,

using TCP/IP hypertext transfer protocol.

Say What!??!

The file that is sent from the web servercontains hypertext markup information.

HTML

A computer at a hosting company that isrunning software that “serves” up web page files.

Say What!??!

The file that is sent from the web servercontains hypertext markup information.

HTML

The “code” or markup text thatthe programmer/designer puts in the html file.

Anatomy of a Web Page

The file that is sent from the web servercontains hypertext markup information.

HTML

Interprets the hypertext markup information,scripts, etc. in order to display the page.

Browser

File Transfer Protocol

A different protocol than “http” that isused for transferring / moving files from

computer to computer (or server to server).

FTP