Chapter 2 The Internet The Web and Electronic

Chapter 2 The Internet, The Web, and Electronic Commerce Mc. Graw-Hill/Irwin Copyright © 2008 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Introduction • The Internet is often referred to as the Information Superhighway because it connects millions of people across the globe. • Unlike a typical highway, the Internet moves ideas and information. • The Web provides an easy-to-use, intuitive interface to connect to the Internet and is used by millions of people every day. 2 -2 Page 29

The Internet and the Web • Large network that connects smaller networks globally • The Internet was Launched in 1969 – National computer network – US funded project called ARPANET • World Wide Web or WWW was introduced in 1991 at CERN 2 -3 Page 30

Common Internet Uses • Communicating – Exchange e-mail – Discussion Groups • Online shopping • Searching – Virtual Libraries • Entertainment • Education or e-learning 2 -4 Page 30

Internet Access Providers • Common way to access the Internet • Commercial Internet Service Providers (ISP) – National service providers – Wireless service providers 2 -5 Page 31

Browsers • Programs that provide access to Web resources • Allow you to surf the Internet • Three well-known browsers – Mozilla Firefox – Netscape Communications – Microsoft Internet Explorer • Address or location of the resource must be specified – URL Page 31 2 -6

URLs • Uniform Resource Locators – All URLs have at least two parts • Protocol • Domain name • Locates Web sites 2 -7 Page 32

More on Browsers • Browsers interpret HTML commands – Hypertext Markup Language – Contained in a document • Display document as a Web page – hyperlinks – Applets • Mobile browsers 2 -8 Page 33

Communication • Most popular Internet activity • Types of communication – Electronic Mail (E-Mail) • E-Mail Address • Spam – Instant Messaging – Social Networking – Blogs, Microblogs, Wikis 2 -9 Page 33

Blogs, Microblogs, Wikis • Individuals create personal Web sites, called Web logs (blogs) - Online diaries - Info about a hobby • Microblog publishes short sentences - Twitter • Wiki is a web site specially designed to allow visitors to fill in missing info or correct inaccuracies. Page 36 Wikipedia 2 -15

Search Tools • • Search engines Metasearch engines Specialized search engines Tips – – – Page 37 Start with the right approach Be as precise as possible Use multiple words Use Boolean operators Check your spelling Keep moving 2 -16

Content Evaluation • Not all information on the web is accurate • Ways to evaluate accuracy of Web information include: – Authority – Accuracy – Objectivity – Currency 2 -20 Page 42

Electronic Commerce • Also known as e-commerce • Buying and selling of goods over the Internet – Business-to-consumer (B 2 C) – Consumer-to-consumer (C 2 C) • Web auctions – Business-to-business (B 2 B) 2 -21 Page 42

Security • Payment methods must be fast, reliable, and secure • Three basic options – Checks – Credit card – Digital cash 2 -24 Page 44

Web Utilities • Specialized utility programs that make the usage of the Internet & web safer and easier – Web-based applications – Plug-Ins – Filters – FTP – Internet Security Suites 2 -25 Page 46

Study Summary, Key terms, Questions p 54 - 59 CE 06_PP 02 -28 Page 266