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Internet Basics. The Internet Is…. a network of networks a community of people, businesses, schools and organizations E-mail, web pages, databases, file transfer and exchange based on the TCP/IP protocols. How Information moves: TCP / IP. TCP ( T ransmission C ontrol P rotocol)
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Internet Basics The Internet Is… • a network of networks • a community of people, businesses, schools and organizations • E-mail, web pages, databases, file transfer and exchange • based on the TCP/IP protocols
How Information moves: TCP / IP • TCP (Transmission Control Protocol) • IP (Internet Protocol) Addresses • Converts “English” names like: www.westhillci.ca • into “Machine” (IP) names: 198.137.241.30 Domain Name System (DNS) IP Routing • Your ISP (Internet Service Provider) “resolves” the address with their DNS servers so that: • www.tdsb.on.ca is translated to 146.229.1.191
The Internet vs The Web • The Internet is ALL of the computers and ALL of the information available • The World Wide Web is a subset of the Internet that contains hypermedia and is accessible through a Web browser. What is the difference between the Internet and the World Wide Web?
Resource Addresses • protocol: //address/dir/file • http hyper text transport protocol NormalWeb pages • https Secure Web pages • ftp File Transfer Protocol • There are others… Uniform Resource Locators (URLs)
NETNetwork Sites ORGNon-profit Organizations UKUnited Kingdom CACanada AUAustralia Common Domains EDU Education MIL Military GOVNon-Military Government Sites COMCommercial Organizations
Who’s in charge of Internet Domains? ICANN Internet Corporation for Assigned Names & Numbers In 2011 BIG changes were announced, if you are willing to pay big bucks, you are now allowed to create domains names using any combination of letters and numbers.