SMG IS 223 Lecture Notes - Lecture 2: Web Browser, Hostname, Internetworking
24 May 2018
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The Internet and the World Wide Web
• The internet is one of several global networks
o The internet has standard protocols
o The internet is based on internetworking, or combining networks to form larger
networks
• The WWW uses the internet
o The world wide web is not the internet
o The www is
▪ Not the internet
▪ Html and http
• Difference between WWW and the Internet? WWW uses the Internet
• Difference between Internet and Google? Google is a search engine but Internet does
everything
The Internet and the World Wide Web:
Web Domain Names and Addresses
• URL→ identify and locate a particular web page
• Domain name is a term that helps people recognize a person/company
o Www (hostname)
o Google (domain name)
o .com (top-level domain name)
World Wide
Web
method for publishing & accessing content over the internet
Web browser
software for navigating and viewing contents on the World Wide Web
Web page
displayed in a browser, includes formatting and links to other web pages
URL
address used by browser to find a particular resource on the web (example:
web page)
Web server
software that receives requests from browsers and sends them web pages
Web site
A collection of web pages
HTML
Language used for describing content on a web page: text, images,
formatting, and links.
HTTP
Communications standard used for transferring Web pages
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