Earlier in this course, we discussed the Internet. We saw that the Internet was a collection of protocols, hardware, and software components that enabled people to communicate via computers all over the world. We explored the world wide web, which is a major part of the Internet, and learned how it might be used to find all kinds of information.
As exciting as the web is, it is only a piece of an even larger and more significant entity. The Internet is made of other components that have other uses and characteristics.
Our purpose in this unit is to discuss the Internet in more detail than we have done before, and to learn some new ways we can use these additional Internet tools.