Internet Basics

What is it? RESOLUTION by The Federal Networking Council (FNC):"Internet" refers to the global information system that --

(i) is logically linked together by a globally unique address space based on the Internet Protocol (IP)

(ii) is able to support communications using TCP/IP

(iii) provides, uses or makes accessible, either publicly or privately, high level services layered on the communications and related infrastructure described herein."

Networks LAN WAN Intranet Internet

Some Terminology TCP / IP World Wide Web / HTML / XML Email / SMTP FTP Chat Bulletin Boards Search Engines

Infrastructure Routers Modems Servers Cables / Satellite / Wireless Network Cards – Ethernet

More Terminology Domain Name InterNIC URL ISP

eCommerce Infrastructure

Backbone – Qwest, MCI Worldcom Hardware – Cisco, Lucent, etc.

Applications Software to make business possible – Microsoft, Sun,

Netscape Intermediaries

Brokerages, Content aggregators – Doubleclick, Yahoo

eCommerce Sellers – Amazon, eToys, etc.

Security SPAM Virus Worm

Encryption Firewall