An informative article about networks. Includes what it is, and types of networks.

This site from Webopedia.com provides definition and uses of Local Area Networks. Includes LAN characteristics with linked definitions. Has many links to related sites.

Firewall software forms the first line of defense against hackers and certain types of computer viruses. This site explains what a firewall can do to help secure a computer and what it cannot do. The site also discusses different types...

Computers and the internet have changed how people work, communicate, and share information, but we need to understand the advantages and disadvantages of sharing online. This tutorial looks at email, video conferencing, online document...

When an earthquake happens, how are scientists able to determine the original location of the quake? In this project, you'll use archived data from a network of seismometers to find out for yourself. You'll create your own seismograms...