Background
The ARPANET, created in 1969,
connected computers at UCLA,
Stanford Research Institute,
University of Utah, and University
of California at Santa Barbara
Early Internet pioneers used
primitive command-line user
interfaces to send e-mail,
transfer files, and run scientific
calculations on Internet
supercomputers
With an estimated 500 million
nodes and more than 2 billion
users, the Internet is huge
Chapter 6: The Internet 4