Chapter 3: using the internet making the most of the web s resources. Scientists were asked to come up with a solution to secure communications between large computer centers in case of a nuclear attack. They responded by inventing packet switching and routers. By taking data messages and breaking them into small packets, each packet could be addressed and sent individually to a destination through a series of routers. The routers would send each packet along the optimum path to the next router, depending on traffic and availability. The internet is a network of networks that utilizes a common communication protocol so that computers from different manufacturers can communicate. It is the way we communicate, shop, research, entertain, and express ourselves. The web is only one component of the internet, the means we use to access information over the internet (hence the www at the beginning of web addresses).