The Internet, The Web, and Electronic Commerce Chapter 2

2-2 Competencies (Monday) Discuss the origins of the Internet and the Web Describe how to access the Web using providers and browsers Discuss Internet communications, including , instant messaging, and social networking Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

Describe search tools, including search engines and metasearch engines Discuss electronic commerce, including B2C, C2C, B2B, and security Describe Web utilities: Web-based applications, FTP, plug-ins, and filters Competencies (Wednesday) Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-3

What do most people or you use the internet and web for? – Introduction 1-4 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

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. Introduction Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-5

The Web provides an easy-to-use, intuitive interface to connect to the Internet and is used by millions of people every day. Introduction 1-6 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

Large network that connects smaller networks globally The Internet was Launched in 1969 –National computer network –US funded project called ARPANET (Advanced Research Project Agency Network) World Wide Web or WWW was introduced in 1991 at CERN (Centre for European Nuclear Research) Prior to the web, the internet was all text. The Internet and the Web Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-7

What is the difference between the Internet and the web? Internet is the actual physical network comprised of wires, cables, & satellites Being connected to the network is often referred to as being online The Web is a multimedia interface to resources available on the internet The Difference Between “sa7abah” and “ghaima” 1-8 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

2-9 List and describe 5 most Common Internet Uses Communicating (most popular) –Exchange –Discussion Groups Online shopping (fastest growing application) Searching –Virtual Libraries Entertainment (e.g. music) Education or e-learning Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

2-10 Internet Access Providers Common way to access the Internet Commercial Internet Service Providers (ISP) –National Service Providers (AOL- in US) –Wireless service providers (Fido- in Canada) Give me examples of NSPs and WSPs in Kuwait? People connect to ISPs either through dialup, DSL, cable, or wireless modems. Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

The common way to access the Internet is through a provider (ISP) or host computer Types of ISP National – like AOL (telephone, DSL cable, fee) Wireless – Like AT&T stick, (no telephone, wireless modem) Give me examples of NSPs and WSPs in Kuwait? Internet Access Providers Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

2-12 Browsers Allow you to surf the Internet Three well-known browsers –Mozilla Firefox –Microsoft Internet Explorer –Google Chrome –Apple Safari Address or location of the resource must be specified –URL (uniform resource locator) Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

2-13 More on Browsers Browser is software that allows users to navigate the Web and read the multimedia formatted pages Browsers interpret HTML commands –Hypertext Markup Language –Contained in a document Display document as a Web page Mobile browsers run on Portable devices. Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

2-14 URLs Uniform Resource Locators –All URLs have at least two parts Protocol (rules for exchanging data between computers ) Domain name (server where the resource is located) –Top Level Domain (the type of organization) Locates Web sites/Web pages Give me a list of domains names you are familiar with? Examples of TLDs? Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

May contain Hyperlinks -- allow users to quickly connect to other pages or Web sites Graphics Text Web server– the computer that stores and shares graphics, text, audio & video clip files Web pages contain links to programs called applets These are special programs written in a programming language called Java Java applets, Javascript and AJAX are used to make WebPages interactive. These programs can be quickly downloaded and run by most browsers WebPages Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

Most popular Internet activity Types of communication –Electronic Mail ( ) Address Spam –Instant MessagingInstant Messaging –Social NetworkingSocial Networking –Blogs, Microblogs, and WikisBlogs, Microblogs, and Wikis Communication Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-16

2-17 Transmission of electronic messages over the Internet Basic parts 1.Header Address Subject Attachment 2.Message 3.Signature Line Outlook and Thunderbird are most common programs. Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

Address Example Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved Address has two parts User name - identifies unique user or computer in the domain Domain name - references a specific organization Top-level domain code identification includes geographical location or organizational identification: 1..com = commercial 2..edu = education and research 3..org = organizations (usually non-profit) 4..net = major network centers (usually easier to access than commercial) 5..gov = government

Spam Junk and/or unwanted Computer viruses or destructive programs are often attached to unsolicited –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 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-19

Instant Messaging Is an extension of that provides direct, live communication between two or more people Instant messaging programs also include: –Video conferencing features –File sharing –Remote assistance –Other features?? Most widely used instant messaging services: –AOL’s Instant Messenger –Microsoft’s MSN Messenger –Yahoo Messenger Different services do not always play well together Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-20

Social Networking One of the fastest growing uses of the Internet Three basic categories: –Reunite –Friend of a friend –Common interest Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-21

Blogs, Microblogs, and Wikis Help people communicate across the glob. 1.Blogs or web logs: like online diaries with personal information (Bloggers and Word Press). 2.Microblog: short sentences that take only few seconds to write (Twitter). 3.Wiki (Hawaiian word meaning fast): allows participants to create an online encyclopaedia by filling the gaps or fixing inaccuracies (Wikipedia). Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-22

Search Services: organizations that help you find information over the internet. Spiders: programs that continually look for new information and update search services database. –Search enginesSearch engines –Metasearch enginesMetasearch engines –Specialized search enginesSpecialized search engines Search Tools Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-23

2-24 Search Engines Specialized programs to assist in locating information Types of searches –Keyword search Return hits – hyperlinks Example: Google –Directory search (index) You select category Example: Yahoo Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

Metasearch Engines Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved Programs that automatically submit your search request to several engines simultaneously The engine receives the results, eliminates duplicates, orders hits, and then provides the edited list to you

Programs that focus on subject specific Web sites Specialized sites can potentially save you time by narrowing your search Specialized Search Engines 1-26 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-26

2-27 Content Evaluation Not all information on the web is accurate Ways to evaluate accuracy of Web information include: Authority – Is author an expert in the subject area? Is the site an official site for the information presented? Accuracy – Is the information subject to critical review prior to posting? Objectivity – Is the information factual, or does the author have a bias? Currency – Is the information current? Is there a “published on” date or “updated on” date indicated? 1-27 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

Also known as e-commerce What are the advantages and disadvantages of e-commerce? Buying and selling of goods over the Internet –Business-to-consumer (B2C)Business-to-consumer –Consumer-to-consumer (C2C) Web auctions –Business-to-business (B2B) Electronic Commerce Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-28

Business to Consumer Fastest growing type of e-commerce Three most widely used B2C applications: –Online banking (e.g., NBK.com) –Financial trading (e.g., etrade)etrade –Shopping (or window shopping) Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-29

Involves the sale of a product or service from one business to another (B2B) Primarily a manufacturer supplier relationship Example: dhgate.com Why would companies engage with B2B websites? Business to Business Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-30

Consumer to Consumer Web Auctions Consumer-to-consumer e-commerce (C2C) Similar to traditional auctions Types –Auction house sites (e.g., government of Canada website) –Person-to-person auction sites (e.g., e-Bay) Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved Return

Security Dilemma People are not comfortable using e-commerce. Payment methods must be fast, reliable, and secure Three basic options –Checks Slow –Credit card Problem with carders –Digital cash Third party, more secured. Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved Better

Specialized utility programs that make using the internet & web safer and easier –Web-based applications offered by Web-based services (often free) that provide Internet access to programs with capabilities similar to Microsoft Word, Excel, and PowerPoint. Applications that run on your desktop are usually not free and are more specialized (e.g., tax filing), and are usually provided by ASP (application service providers). –FTP (download/upload) –Plug-InsPlug-Ins –FiltersFilters –Internet Security SuitesInternet Security Suites Web Utilities Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. 2-33

Plug-Ins Programs that are automatically loaded by and work with your browser; like Acrobat Reader; QuickTime from Apple; RealPlayer; and Shockwave from Macromedia Some are loaded, others need to be installed. Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved. Return 2-34

Filters Return Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved Filters – block access to specified sites; set time limits. Net Nanny, Cybersitter and Safe Eyes are amongst the best filters. Still need parent supervision of children browsing habits.

FTP and Secure FTP: copy files to and from your computer to the internet. Web-based file transfer services: uses web browser to upload/download files (no need for software). Example: Drop.io BitTorrent: distribute files transfers across many computers. Each computer send a tiny piece of the file. File Transfer Utilities 1-36 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

2-37 Internet Security Suites Collection of utility programs designed to maintain your security and privacy while on the web –McAfee –Norton Internet Security Suites (Key Term) control… Spam Protect against computer viruses Provide Filters Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.

2-38 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 1-38 Copyright © 2010 by The McGraw-Hill Companies, Inc. All rights reserved.