Chapter 7 The Web and E-mail

FastPoll True/False Questions Answer A for True and B for False 1 http://www.cnn.com is an example of a URL. 2 The Web uses WEP as its main protocol 3 If your browser can’t open PDF files, you can download the Adobe Reader player. 4 The Web uses cookies because HTTP is stateless. 5 [/ left] is an example of an HTML tag. Chapter 7: The Web and E-mail

FastPoll True/False Questions Answer A for True and B for False 6 A Web designer who wants to create interactive pages can use scripts, Java applets, and ActiveX controls. 7 A Web crawler is type of virus that affects cookies. 8 Keyword stuffing is a technique for collecting user IDs from Web site logins. 9 Most e-commerce shopping carts use cookies to keep track of the items you are purchasing. Chapter 7: The Web and E-mail

FastPoll True/False Questions Answer A for True and B for False 10 Secure connections typically begin with https. Chapter 7: The Web and E-mail

Web Technology Web Basics HTML HTTP Web Browsers Cookies Web Page Authoring HTML Scripts Chapter 7: The Web and E-mail

Question 11 The Web requires many technologies. Which one of the following statements is accurate about these technologies? A. HTML, XHTML, DHTML, and Ajax extend basic Web scripts so that Web designers can create pages with videos and interactive questions. B. Explorer, Safari, Firefox, and Chrome are examples of Web browsers. C. Cookies and HTML codes are stateless Web protocols. D. Text editors like ActiveX and Notepad can be used to create HTML documents. Chapter 7: The Web and E-mail

Web Basics The Web is a collection of document, image, video, and sound files A Web site contains a collection of related information Podcasts RSS vs. Atom Videocasting Wiki Web 2.0 Figure 7-1 Chapter 7: The Web and E-mail

Web Basics A Web server accepts requests from browsers A Web page is the product or output of one or more Web-based files displayed in a format similar to a page in a book A Web browser is client software that displays Web page elements and handles links between pages Every Web page has a unique address called a URL Figure 7-3 Chapter 7: The Web and E-mail

HTML Set of specifications for creating documents that a browser can display as a Web page Markup language HTML tags XHTML DHTML Ajax Chapter 7: The Web and E-mail

HTML Figure 7-4 Chapter 7: The Web and E-mail

HTTP HTTP messages flow between a browser and a Web server. Figure 7-5 Chapter 7: The Web and E-mail

Web Browsers Help you access Web pages Upgrade to new browser versions as they become available Popular browsers: Internet Explorer Mozilla Firefox Apple Safari Google Chrome Opera Figure 7-7 Chapter 7: The Web and E-mail

Web Browsers Helper applications extend browser’s ability to work with file formats A plug-in is a type of helper application A player is any helper application or plug-in that helps a browser display a particular file format Figure 7-8 Chapter 7: The Web and E-mail

Cookies Small chunk of data generated by a Web server and stored in a text file on computer’s hard disk Fix problems caused by HTTP’s stateless protocol Relatively safe Your computer does not have to accept cookies Figure 7-9 Chapter 7: The Web and E-mail

Web Page Authoring HTML conversion utility Online Web authoring tools Web authoring software Adobe Dreamweaver Text editor Figure 7-11 Chapter 7: The Web and E-mail

HTML Scripts HTML scripts can perform specific actions or respond to specific user actions HTML forms Server-side script Client-side script Java applet ActiveX control Digital Certificate Figure 7-14 Chapter 7: The Web and E-mail

Search Engines Search Engine Basics Formulating Searches Citing Web-based Source Material Chapter 7: The Web and E-mail

Question 12 Search engines are a key Web technology. When you use a search engine, you can be confident that: A. Your searches will remain confidential. B. Information accessed by a search engine is in the public domain. C. Search engine results are totally impartial. D. You can usually narrow a search by adding more key words. Chapter 7: The Web and E-mail

Search Engine Basics A Web search engine is a program designed to help people locate information on the Web by formulating simple keyword queries Figure 7-16 Chapter 7: The Web and E-mail

Search Engine Basics A Web crawler is a computer program that is automated to methodically visit Web sites A search engine indexer is software that pulls keywords from a Web page and stores them in a database A search engine’s query processor looks for your search terms in search engine’s indexed database and returns a list of relevant Web sites Link popularity is measured by quantity and quality of links from one Web page to others A meta keyword is entered into a header section of a Web page when it is created and is supposed to describe the page contents Keyword stuffing Chapter 7: The Web and E-mail

Formulating Searches Most search engines work with keyword queries in which you enter one or more words, called search terms Figure 7-21 Chapter 7: The Web and E-mail

Formulating Searches A Boolean operator is a word or symbol that describes a relationship between keywords, helping you create a more focused query Figure 7-22 Chapter 7: The Web and E-mail

Citing Web-Based Source Material To copy a passage of text from a Web page, highlight the text, click the Edit menu, then select Copy. Next, switch to your own document and use the Paste option. Figure 7-25 Chapter 7: The Web and E-mail

Citing Web-Based Source Material Figure 7-26 Chapter 7: The Web and E-mail

E-commerce E-commerce Basics Online Shopping Online Auctions Online Payment Chapter 7: The Web and E-mail

Question 13 Online shoppers are justifiably worried that personal information and credit card numbers supplied in the course of an e-commerce transaction might be hijacked and used inappropriately. What technology can hackers use to hijack credit card numbers? A. A packet sniffer B. S-HTTP C. HTML D. SSL Chapter 7: The Web and E-mail

E-commerce Basics Business transactions conducted electronically over a computer network B2C (business-to-consumer) C2C (consumer-to-consumer) B2B (business-to-business) B2G (business-to-government) Figure 7-27 Chapter 7: The Web and E-mail

E-commerce Basics Enhances traditional business models Styles of online advertisements Banner ad Hover ad Pop-up ad Click-through rate Ad-blocking software prevents ads from appearing on screens Figure 7-28 Chapter 7: The Web and E-mail

Online Shopping In a typical shopping session, you connect to an online storefront and use navigation controls to browse through the merchant’s catalog. As you browse, you can drop items into your electronic shopping cart. At the checkout counter, you enter the information necessary to pay for the items you selected. Figure 7-30 Chapter 7: The Web and E-mail

Online Shopping Figure 7-31 Chapter 7: The Web and E-mail

Shopping Carts Figure 7-32 Chapter 7: The Web and E-mail

Online Auctions An online auction is the electronic equivalent to good old-fashioned yard sales, rummage sales, and auctions You can expect to bid on new, used, closeout, overstock, or refurbished items at an online auction Computer software takes the place of an auctioneer Figure 7-33 Chapter 7: The Web and E-mail

Online Payment The most popular ways to make online payments include submitting your credit card number directly to a merchant and using a third-party payment service such as PayPal Online shoppers are justifiably worried that personal information and credit card numbers supplied in the course of an e-commerce transaction might be hijacked and used inappropriately Chapter 7: The Web and E-mail

Online Payment A secure connection encrypts the data transmitted between your computer and a Web site SSL (Secure Sockets Layer) TLS (Transport Layer Security) S-HTTP (secure HTTP) Figure 7-34 Chapter 7: The Web and E-mail

Online Payment Person-to-person payments are an alternative to credit cards The payment service is the only entity that sees your credit card number An electronic wallet is software that stores billing and shipping information Figure 7-35 Chapter 7: The Web and E-mail

Online Payment An electronic wallet can transfer your billing and shipping information to a participating site’s e-commerce Web server when you check out. Figure 7-36 Chapter 7: The Web and E-mail

FastPoll True/False Questions Answer A for True and B for False 1 http://www.cnn.com is an example of a URL. (True – 362) 2 The Web uses WEP as its main protocol. (False – 364) 3 If your browser can’t open PDF files, you can download the Adobe Reader player. (True – 366) 4 The Web uses cookies because HTTP is stateless. (True – 368) 5 [/ left] is an example of an HTML tag. (False – 370) Chapter 7: The Web and E-mail

FastPoll True/False Questions Answer A for True and B for False 6 A Web designer who wants to create interactive pages can use scripts, Java applets, and ActiveX controls. (True – 372) 7 A Web crawler is type of virus that affects cookies. (False – 375) 8 Keyword stuffing is a technique for collecting user IDs from Web site logins. (False – 378) 9 Most e-commerce shopping carts use cookies to keep track of the items you are purchasing. (True – 387) Chapter 7: The Web and E-mail

FastPoll True/False Questions Answer A for True and B for False 10 Secure connections typically begin with https. (True – 389) Chapter 7: The Web and E-mail

Question 11 The Web requires many technologies. Which one of the following statements is accurate about these technologies? A. HTML, XHTML, DHTML, and Ajax extend basic Web scripts so that Web designers can create pages with videos and interactive questions. B. Explorer, Safari, Firefox, and Chrome are examples of Web browsers. C. Cookies and HTML codes are stateless Web protocols. D. Text editors like ActiveX and Notepad can be used to create HTML documents. Chapter 7: The Web and E-mail

Question 12 Search engines are a key Web technology. When you use a search engine, you can be confident that: A. Your searches will remain confidential. B. Information accessed by a search engine is in the public domain. C. Search engine results are totally impartial. D. You can usually narrow a search by adding more key words. Chapter 7: The Web and E-mail

Question 13 Online shoppers are justifiably worried that personal information and credit card numbers supplied in the course of an e-commerce transaction might be hijacked and used inappropriately. What technology can hackers use to hijack credit card numbers? A. A packet sniffer B. S-HTTP C. HTML D. SSL Chapter 7: The Web and E-mail