Chapter 2 The Internet the Web and Electronic

Competencies (1 of 2) • Discuss the origins of the Internet and the Web • Describe how to access the Web using providers and browsers • Discuss Internet communications, including e-mail, instant messaging, social networking, blogs, microblogs, and wikis. 2 -2 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Competencies (2 of 2) • Describe search tools, including search engines, metasearch engines, and specialized search engines. • Evaluate the accuracy of information on the Web. • Discuss electronic commerce, including B 2 C, C 2 C, B 2 B, and security issues. • Describe Web utilities: Web-based applications, FTP, plug-ins, and filters, Internet security, and file transfer utilities. 2 -3 Copyright © 2011 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 idea 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. • Competent end users need to be aware of the resources available on the Internet and the Web. 2 -4 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

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 -5 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Common Internet Uses • Communicating – Exchange e-mail – Discussion Groups • Online shopping • Searching – Virtual Libraries • Entertainment • Education or e-learning 2 -6 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Access • Common way to access the Internet is through a Commercial Internet Service Providers (ISP) – Regional Service Provider – Wireless service providers 2 -7 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Browsers • Programs that provide access to Web resources • Allow you to surf the Internet • Three well-known browsers – – Mozilla Firefox Apple Safari Microsoft Internet Explorer Google Chrome • Address or location of the resource must be specified – URL 2 -8 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

URLs • Uniform Resource Locators – All URLs have at least two parts •

More on Browsers • Browsers interpret HTML commands – Hypertext Markup Language – Contained in a document • Display document as a Web page 2 -10 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Communication • Most popular Internet activity • Types of communication – Electronic Mail (E-Mail) – Instant Messaging – Social Networking 2 -11 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Spam • Junk and/or unwanted Email • Computer viruses or destructive programs are often attached to unsolicited email – CAN-SPAM Act • Spam blockers incorporate a myriad of approached to identify and control spam • Spam blockers are also referred to as: – Junk mail filters – Anti-spam programs Return 2 -14 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Blogs, Microblogs, and Wikis • Web logs or blogs –postings that are timestamped and arranged with the newest item first • Microblog – publishes short sentences – Answer the question - What are you doing? – Twitter is a microblog • Wiki – a Web site specially designed to allow visitors to fill in missing information 2 -17 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Search Tools • • 2 -18 Search engines Metasearch engines Specialized search engines Content

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 -24 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Business to Business • Involves the sale of a product or service from one business to another (B 2 B) • Primarily a manufacturer supplier relationship 2 -25 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Business to Consumer • Fastest growing type of e-commerce • Three most widely used B 2 C applications: – Online banking – Financial trading – Shopping Return 2 -26 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Consumer to Consumer Web Auctions • Consumer-to-consumer e-commerce (C 2 C) • Similar to traditional auctions • Types – Auction house sites – Person-to-person auction sites 2 -27 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Security • Payment methods must be fast, reliable, and secure • Three basic options – Checks – Credit card – Digital cash 2 -28 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Web Utilities • Specialized utility programs that make using the internet & web safer and easier – – – 2 -29 Web-based applications Plug-Ins Filters FTP Internet Security Suites Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Plug-Ins Return 2 -30 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All

Filters Return 2 -31 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All

Internet Security Suites • Collection of utility programs designed to maintain your security and privacy while on the web – Mc. Afee – Norton 2 -32 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Careers In IT - Webmasters • Develop & maintain websites • Back-up of the company website, updating resources, and development of new resources • Work with the marketing department to increase the site traffic flow 2 -33 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

A Look to the Future Web-Accessible Refrigerators • “Smart” appliances in homes will have their own Web page • Refrigerators know what food they contain • Appliance could send an e-mail to the grocery store to restock • Downsides? 2 -34 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Open-Ended Questions (Page 1 of 2) • Discuss the uses of the Internet. Which activities have you participated in? Which one do you think is the most popular? • Explain the differences between the three types of providers. • What are the basic elements of an e-mail message? 2 -35 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.

Open Ended Questions (Page 2 of 2) • What is social networking? Describe three types of social networking sites. • Describe the different types of search engines. Give an example of the type of search each engine is best for. 2 -36 Copyright © 2011 by The Mc. Graw-Hill Companies, Inc. All rights reserved.