1. ITIS 1210 Introduction to Web-Based Information Systems Chapter 5. How Internet Addresses and Domains Work

2. How Internet Addresses and Domains Work  Domain Name System (DNS)  Way computers contact each other on the Internet  User supplies a domain  www.uncc.edu www.uncc.edu  DNS translates domain into IP address  123.23.43.121  Name servers keep track of the domains and the corresponding IP addresses thru tables

3. How Internet Addresses and Domains Work  Major domains provide organization  Examples  COM (commercial)  EDU (education)  MIL (military)  GOV (government)  Major domains organized into many minor domains

4. How Internet Addresses and Domains Work spacelink.nasa.gov Top level domain: Government Next level domain: NASA Specific computer at NASA.GOV that supplies information about the Spacelink program