Each network operates according to a set of computer programs called network protocols for
computers to talk to one another. Computer networks can now be interconnected efficiently
through gateways. The biggest network is the World Wide Web. It consists of a large number of
smaller interconnected networks called internets. These internets may connect tens, hundreds,
or thousands of computers. They can share information with each other, such as databases of
information. The internet allows people all over the world to communicate with each other
effectivelyand inexpensively.