Example 172,570 people in America were diagnosed with lung cancer in 2005, a year in which there were approximately 290,000,000 Americans, yielding an absolute risk of 1:1,680 of being diagnosed with lung cancer.
Definition: A local area network (LAN) supplies networking capability to a group of computers in close proximity to each other such as in an office building, a school, or a home.A LAN is useful for sharing resources like files, printers, games or other applications.ost local area networks use Wi-Fi or Ethernet for connectivity between devices. (See also-Comparing Wired and Wireless Network Technology). Each of these local networks may stand alone (disconnected from any other network) or may connect to other LANs and additionally a WAN (such as the Internet).
About the difference between WAN and LAN I only known that WAN, like MAN, is for Large Area Network and LAN is for a small Area Network, like between 3 or 4 computers. You got it right, right example of WAN is internet. And LAN is cable network in your city.