Transcript Internet Basics - Toronto District School Board
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 Domain Name System (DNS) • Converts “English” names like: www.westhillci.ca • into “Machine” (IP) names: 22.214.171.124 IP Routing • Your ISP (Internet Service Provider) “resolves” the address with their DNS servers so that: – www.tdsb.on.ca is translated to 126.96.36.199 The Internet vs The Web What is the difference between the Internet and the World Wide 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. Resource Addresses Uniform Resource Locators (URLs) • protocol: //address/dir/file • http hyper text transport protocol Normal Web pages • https Secure Web pages • ftp File Transfer Protocol • There are others… Common Domains EDU Education MIL Military GOV Non-Military Government Sites COM Commercial Organizations NET Network Sites ORG Non-profit Organizations UK United Kingdom CA Canada AU Australia 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.