14. TCP/IP Networking
It would be hard to overstate the importance of networks to modern computing, although that doesn’t seem to stop people from trying. At many sites—perhaps even the majority—web and email access are the primary uses of computers. As of 2010, internetworldstats.com estimates the Internet to have nearly 1.5 billion users, or more than 21% of the world’s population. In North America, Internet penetration approaches 75%.
TCP/IP is the networking system that underlies the Internet. TCP/IP does not depend on any particular hardware or operating system, so devices that speak TCP/IP can all exchange data (“interoperate”) despite their ...
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