Every
file, every movie, every sound, every program on the Internet has an address
that is unique from every other object. Every
file, every movie, every sound, every program on the Internet has an address
that is unique from every other object.
That unique address is called a Uniform Resource Locator, or URL, which is the backbone of hyperlinks.
A URL consists of two main pieces:
The protocol and IP address (or domain name) identifies the specific server (in blue, below)
The file name, including directory and sub-directory information, identifies the specific file (in red, below)
http://www.grantcom.us/images/logo.gif
We discussed protocols and IP addresses earlier in the course.