Information Technology Foundations-BIT 112 TECHNOLOGY GUIDE FIVE Basics of the Internet and the World Wide Web

Information Technology Foundations-BIT Technology Guide Outline TG5.1 The Internet TG5.2 The World Wide Web

Information Technology Foundations-BIT Learning Objectives Differentiate among the Internet, the World Wide Web, intranets, and extranets. Describe how the Internet operates. Discuss the various ways to connect to the Internet. Describe the parts of an Internet address.

Information Technology Foundations-BIT The Internet The Internet is a global WAN that connects approximately one million organizational computer networks in more than 200 countries. Grew out of an experimental project of the Dept of Defense, Advanced Research Project Agency (DARPA) in the late 1960’s.

Information Technology Foundations-BIT The Internet Today, Internet technologies are being used both within and among companies and organizations. –Intranet Network designed to serve the internal informational needs of a single organization. –Extranet Network that connects parts of the intranets of different organizations and allows secure communications among business partners over the Internet using virtual private networks. –Darknet Private network that runs on the Internet but is only open to users who belong to the network.

Information Technology Foundations-BIT Accessing the Internet Connecting via an online service Internet kiosks Dial-up ISDN DSL Cable Modem Satellite Wireless Fiber to the home

Information Technology Foundations-BIT Internet Kiosk

Information Technology Foundations-BIT An Image of the Internet in the U.S. The white lines are Internet backbone links.

Information Technology Foundations-BIT Addresses on the Internet Domain names consist of multiple parts, separated by dots, which are read from right to left. –Top-level domain Rightmost part of an Internet name; common top-level domains are.com,.edu,.gov –Name of the company Next section of the Internet name –Name of the specific computer Next section of the Internet name

Information Technology Foundations-BIT Internet Address example Top level domain: edu Name of the organization: Auburn University Name of the specific computer: business

Information Technology Foundations-BIT The World Wide Web The World Wide Web is a system of universally accepted standards for storing, retrieving, formatting, and displaying information via a client/server architecture. –Not the same thing as the Internet Internet functions as the Transport mechanism. WWW is an application that uses the Internet, is another example of an app that runs on the Internet. –Home page: a text and graphical screen display that usually welcomes the user and explains the organization that has established the page. –Uniform resource locator: the set of letters that points to the address of a specific resource on the Web.