1. Chapter Copyright © 2015 McGraw-Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw-Hill Education. 2

2. Computing Essentials 2015 2-2 Learning Objectives 1. Explain the origins of the Internet and the web. 2. Explain how to access the web using providers and browsers. 3. Compare different web utilities including plug-ins, filters, file transfer utilities, and Internet security suites. 4. Compare different Internet communications, including email, text messaging, instant messaging, social networking, blogs, microblogs, Webcasts, podcasts, and wikis. 5. Describe search tools, including search engines and specialized search engines. 6. Evaluate the accuracy of information on the web. 7. Identify electronic commerce, including B2C, C2C, B2B, and security issues. 8. Describe cloud computing, including the three-way interaction of clients, Internet, and service providers.

3. Computing Essentials 2015 2-3 Introduction The Internet is an interconnected mesh of computers and data lines that connects millions of people and organizations. It is the foundation of the digital revolution. The web provides an easy-to-use interface to Internet resources that has become an everyday tool. To be effective and efficient, end users need to be aware of the resources available on the Internet and the web and how to access them.

4. Computing Essentials 2015 2-4 The Internet and the Web The Internet is a large global network, connecting smaller networks all over the globe The Internet was launched in 1969 The United States funded project to develop a national computer network ARPANET (Advanced Research Project Agency Network) The World Wide Web or WWW was introduced in 1991 at CERN (Center for European Nuclear Research) Email was the first “killer app” The Internet and the web are NOT the same The Internet is the physical network that transports data(supports services unrelated to the web, for example: email, file transfer, multiplayer video games, wire transfers, phone calls) The web is a multimedia interface to the resources available on the Internet

5. Computing Essentials 2015 2-5 Common Internet Uses Communicating e-mail, photos, videos Discussions Shopping Searching Virtual libraries Education or e-learning Entertainment

6. Computing Essentials 2015 2-6 Making IT Work for You ~ Online Entertainment Use the Internet to locate and play movies and television shows Netflix, Hulu, Amazon Prime

7. Computing Essentials 2015 2-7 Access Common way to access the Internet is through a Internet Service Provider (ISP) Provide a connection for individuals to access the Internet Use telephone lines, cable, and/or wireless connections

8. Computing Essentials 2015 2-8 Browsers Programs that provide access to web resources Allow you to explore the web by interpreting and than displaying webpages Different browsers may interpret and display the same web page differently, so web developers must test websites on different browsers to make sure they look good Popular Web browsers include: Mozilla Firefox Apple Safari Microsoft Internet Explorer Google Chrome Address or location of the resource must be specified URL (Uniform Resource Locator)

9. Computing Essentials 2015 2-9 URLs URLs tell the computer were a file is located. Uniform Resource Locator Has at least two parts Protocol Domain name Top-level domain (TLD) or Web Suffix Identifies the type of organization

10. Computing Essentials 2015 2-10 HTML and Hyperlinks Browsers interpret HTML commands Hypertext Markup Language Display document as a web page Hyperlinks or links Connect to other web pages Text files Graphic images Audio and Video Clips

11. Computing Essentials 2015 2-11 Interactive Web Sites Technologies used to provide highly interactive and animated websites Cascading Style Sheets (CSS) JavaScript AJAX Applets Mobile Browsers

12. Computing Essentials 2015 2-12 Web Utilities Specialized utility programs that make using the Internet and web safer and easier Plug-Ins Filters File Transfer Utilities Internet Security Suites Internet Security Suites Return

13. Computing Essentials 2015 2-13 Plug-Ins Programs that automatically start and operate as part of you browser Plugins can slow down your browsing experience, so sometimes it makes sense to temporarily disable them Plugins pose a security risk, which is another reason to temporarily disable them Provide an enhanced browsing experience by enabling special file formats and multimedia elements Acrobat Reader Flash QuickTime Windows Media Player Return

14. Computing Essentials 2015 2-14 Filters Programs that block access to selected sites and can set time limits Monitor total time spent on the Internet and at individual web sites CyberPatrol Pearl Echo Norton Online Family Net Nanny Symantec Web Gateway Return

15. Computing Essentials 2015 2-15 File Transfer Utilities Programs that help you upload and download files to and from the Internet Downloading Uploading Three popular types of programs File transfer protocol (FTP) and secure file transfer protocol (SFTP) Web-based file transfer services Bit-Torrent Return

16. Computing Essentials 2015 2-16 Internet Security Suites Designed to maintain your security and privacy while on the web

17. Computing Essentials 2015 2-17 Email E-mail Transmission of electronic messages over the Internet Three elements Header Address Subject Attachments Message Signature

18. Computing Essentials 2015 2-18 Email Client-based e-mail system E-mail client How does Gmail make money? Showing you targeted advertisements based on the automatic analysis of your emails Web-based e-mail system Webmail

19. Computing Essentials 2015 2-19 Spam Junk and/or unwanted e-mail Computer viruses or destructive programs are often attached to unsolicited email CAN-SPAM Act Spam blockers / spam filters use a variety of approaches to identify and control spam

20. Computing Essentials 2015 2-20 Messaging Text messaging / texting SMS (short message service) Short electronic message Instant messaging Extension of email that provides direct, live communication between two or more people Most programs include video conferencing features, file sharing and remote assistance Facebook Chat Google Talk

21. Computing Essentials 2015 2-21 Social Networking Connecting people and organizations that share a common interest or activity Three most popular: Facebook Facebook Profiles Facebook Pages Facebook groups Google+ Circles Hangouts Sparks LinkedIn Business-oriented

22. Computing Essentials 2015 2-22 Blogs, Microblogs Web logs or blogs – personal news pages that are date/time-stamped and arranged with the most recent items shown first Microblogs – short status updates that answer the question: What are you doing now?

23. Computing Essentials 2015 2-23 Webcasts, Podcasts, Wikis Webcast – streaming technology for live broadcast of audio and video Podcast-audio and video files that can be downloaded to your computer or media player Wiki – a specially designed Web site that allows visitors to edit the contents, supports collaborative writing

24. Computing Essentials 2015 2-24 Search Tools Search Services Specialized Search Engines Spiders Search Engines Content Evaluation Authority Accuracy Objectivity Currency (how recent)

25. Computing Essentials 2015 2-25 Electronic Commerce Also known as e-commerce Buying and selling of goods over the Internet Business-to-consumer (B2C) Business-to-consumer Consumer-to consumer (C2C) Consumer-to consumer Business-to-business (B2B) Business-to-business Return

26. Computing Essentials 2015 2-26 Business to Consumer (B2C) Fastest growing type of e-commerce Three most widely used B2C applications: Online banking Financial trading Shopping Return

27. Computing Essentials 2015 2-27 Consumer to Consumer C2C Consumer-to-consumer e-commerce (C2C) Web auctions Similar to traditional auctions Person-to-person auction sites Return

28. Computing Essentials 2015 2-28 Business to Business B2B Involves the sale of a product or service from one business to another Primarily a manufacturer supplier relationship

29. Computing Essentials 2015 2-29 Online payment Security Payment methods must be fast, reliable, and secure options Credit card Digital cash Any online payment processor

30. Computing Essentials 2015 2-30 Cloud Computing Shifts computing activities from users’ desktops to computers on the Internet Frees end-users from owning, maintaining, and storing software programs and data Three basic components: Clients (end-users) Service providers The Internet

31. Computing Essentials 2015 2-31 Careers In IT - Webmasters Develop and maintain websites and resources Backup of company website Update and develop new resources Work with the marketing department to increase site traffic and monitor the flow of customer interactions

32. Computing Essentials 2015 2-32 A Look to the Future Car’s Dashboard as a power, Internet-connected computing device Safety and diagnostic features are already there Potential distractions?

33. Computing Essentials 2015 2-33 Open-Ended Questions (Page 1 of 3) Discuss the Internet, including their origins, the three generations of the web, and the most common uses. Describe how to access the Internet. What are the providers? Define browsers and discuss URLs, HTML, JavaScript, AJAX, Applets, and mobile browsers. What are Web utilities? Discuss plug-ins, filters, file transfer utilities, and Internet security suites

34. Computing Essentials 2015 2-34 Open-Ended Questions (Page 2 of 3) Discuss Internet communications, including client-based and web-based email, instant and text messaging, social networking, blogs, microblogs, webcasts, podcasts, and wikis. Define search tools including search services. Discuss search engines and specialized search engines. Describe how to evaluate the content of a web site.

35. Computing Essentials 2015 2-35 Open-Ended Questions (Page 3 of 3) Describe electronic commerce, including business-to-consumer, consumer-to-consumer, and business-to-business e- commerce, and security. What is cloud computing? Describe the three basic components of cloud computing.