What is the Internet?

• Stevens, page 1:

  "A wide area network (WAN) of more than one million computers that literally spans the globe."
  

• Hoffman, page 5:

  "An amalgam of many networks that participate to a larger or smaller extent."

• Liu, page 1:

  "... a federation of computer networks that speak the same protocols (particularly TCP/IP.)"

• Krol, pages 13-21.