Chapter 2 The Internet and World Wide Web
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1 Chapter 2 The Internet and World Wide Web
2 Chapter 2 Objectives Explain how to access and connect to the Internet Explain how to view pages and search for information on the Web Describe the types of Web sites Describe the types of e-commerce Explain how , FTP, newsgroups and message boards, mailing lists, chat rooms, Instant messaging, and Internet telephony work Identify the rules of netiquette Identify the steps required for Web publishing Next
3 The Internet #1, #2, & #3 Internet: Worldwide collection on networks that link millions of businesses, government agencies, educational institutions, and individuals. Also called the NET. Services Offered: , Web, Chat Rooms, Instant Messaging, VoIP (Voice over Internet Protocol), Research, Blogs, Share Videos. p Fig. 2-1 Next
4 The Internet #4 & #5 How did the Internet originate? Formed by the US Dept. of Defense First Called: ARPANET WHY? Goal: To allow scientists at different locations to share information Networking project by Pentagon s Advanced Research Projects Agency (ARPA) Became functional September 1969 Goal: To function if part of network were disabled p. 50 Next
5 The Internet How has the Internet grown? Today More than 350 million computer linked hosts 1984 More than 1,000 hosts 1969 Four hosts p. 50 Next
6 The Internet #6 Who controls the Internet? No onec cit is a public, cooperative, and independent network Several organizations set standards World Wide Web Consortium (W3C) Oversees research, sets standards and guidelines p. 51 Next
7 How the Internet Works #7 & #8 How can you connect to the Internet? Broadband Internet services or Dial-Up. Examples of broadband and Dial-Up Internet services are below. Slow-speed technology Dial-up access modem in your computer uses a standard telephone line to connect to the Internet Connection must be established each time you log on. Slow but inexpensive High-speed connection Broadband Access Digital subscriber line (DSL)- Uses telephone lines, Cable Internet Uses television lines, Fiber to Premises uses fiber optic cable, Fixed Wireless uses dish shaped antenna, and Wi-Fi Uses radio signals (satellite) Cellular Radio Network and Connection is always on whenever the computer is running p. 51 Next
8 Video: Choosing a Broadband Provider Choose the broadband connection that will best meet your Internet connection needs low quality (click to start) high quality (click to start) Next
9 How the Internet Works #9 What are ways to access the Internet? Can be free or have to pay a fee. WiFi is free Monthly fee depending on quality of connection you want 1. An access provider is called and ISP A. They can be regional providers like Bluegrass for a certain geographic location B. Or a national provider like AT&T which is US wide 2. OSP Online Service Provider (AOL and MSN, for example) 3. Wireless Internet Service Provider (Ex: AT&T, Sprint, T- Mobile, Verison) p. 52 Next
10 How the Internet Works How might data travel the Internet using a cable modem connection? p. 53 Fig. 2-2 Next
11 What is an IP Address? #11, #13 IP stands for Internet Protocol. A number that uniquely identifies each computer. To find your computer s IP address go to Start and type ip in the Run Box and Enter. To find The Department of Education s or yours at home, go to Google and type in What is my IP address and enter. p. 53 Fig. 2-2 Next
12 How the Internet Works #12 & #14 & #16 & #17 What is a domain name? Text version of Internet protocol (IP) address Number that uniquely identifies each computer or device connected to Internet Our domain is Barren p Figs Next
13 The World Wide Web #19, #20, #21 What is the World Wide Web (WWW)? A worldwide collection of electronic documents Also called the Web Each electronic document is called a Web page Can contain text, graphics, sound, video, and built-in connections A Web site is a collection of related Web pages p. 54 Next
14 The World Wide Web #23 What is a Web browser? Program that allows you to view Web pages Microsoft Internet Explorer Netscape Mozilla Firefox Opera Safari p. 54 Next
15 The World Wide Web #24 How does a Web browser display a home page? Step 2. Web browser looks up the home page setting Step 1. Click the Web browser program name Step 4. The home page displays in the Web browser Step 3. The Web browser communicates with the ISP s server to retrieve the IP address. The IP address is sent to your computer. p. 55 Fig. 2-5 Next
16 The World Wide Web #24 What is a home page? The first page that a Web site displays Often provides connections to other Web pages #25 What is downloading? The process of a computer receiving information Depending upon connection speed, downloading can take from a few seconds to several minutes p. 55 Next
17 The World Wide Web #26 What is a URL? (Uniform Resource Locator) Unique address for a Web page A web server delivers the Web page to your computer Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Web Addresses below Chapter 2 p. 56 Fig. 2-6 Next
18 The World Wide Web #27 Process Use a Web Browser such as Google Chrome or Internet Explorer Type in your Website Address The site comes up (The site s Home Page) This is just one web page within hundreds or thousands of webpages on this webiste. Next
19 The World Wide Web #28 Frequently visited web pages Bookmark them as favorites Then can just click the link name on your favorites list or bookmarked list. Next
20 The World Wide Web #29 & #30 What is a hyperlink (link)? Built-in connection to another related Web page location Item found elsewhere on same Web page Different Web page at same Web site Web page at a different Web site p. 57 Next
21 The World Wide Web #31 Tabbed Browsing (Page 53) Top of your browser window displays a tab for every open web page you have Some websites can track your browsing habits or gather personal information You can disable or sign up for do not track list modeled after the do not call list for telemarketers. p. 57 Next
22 The World Wide Web #31 How can you recognize links? Pointer changes to a small hand when you point to a link A link can be text or an image Text links are usually underlined and in a different color p. 57 Fig. 2-7 Next
23 The World Wide Web #33 What is a search engine? Program used to find Web sites and Web pages by entering words or phrases called search text p Fig. 2-8 Next
24 The World Wide Web #34 What is a subject directory? Search tool with organized set of topics and subtopics Lets you find information by clicking links rather than entering keywords p Fig. 2-9 Next
25 The World Wide Web #35 What is a hit? Any Web site name that is listed as the result of a search Step 2. Select type of search you want to run Step 1. Go to search engine Step 3. View hits Step 4. Click link to view Web site p. 60 Fig Next
26 The World Wide Web #37 What are the eleven basic types of Web sites? Portal News Informational Business/Marketing Educational Entertainment Advocacy Blog Wiki Content Aggregator Personal p Fig Next
27 The World Wide Web What are the guidelines for evaluating the value of a Web site? Affiliation Audience Authority Content Currency Design Objectivity p. 63 Fig Next
28 The World Wide Web #38 What is multimedia? Application integrating text with other media elements Graphics (Digital representation of nontext information such as a drawing, chart, or photo. (Formats are JPEG, GIF, PNG, TIFF) Animation Audio Video Virtual reality Plug-ins p. 64 Fig Next
29 The World Wide Web #40 What is a thumbnail? Small version of a larger graphic image used to improve Web page display time Usually click on thumbnail to display larger image p. 64 Next
30 The World Wide Web #41 What is animation? Appearance of motion created by displaying a series of still images in sequence Adobe After Effects (Create your Name and have it move with cool effects.) p. 64 Next
31 The World Wide Web #42 & #43 What is audio? Music, speech, or any other sound Individual compressed sound files that you download from the Web to your computer Common Web audio file formats are AA, AAC, AIFF, ASF, MP3, WAV, WMA, RA, and QT Once downloaded, you can play (listen to) the contents of the files p Fig Next
32 The World Wide Web #44 Streaming and Podcasting are two ways to distribute audio? Streaming = Transfers data in a continuous and even flow, let s you listen to the sound as it downloads, radio stations use streaming audio to broadcast over the Web Podcasting = Audio, usually MP3 format, stored on a website. p. 64 Next
33 The World Wide Web What is video? Consists of full-motion images with sound played back at various speeds Popular type of Video Formats = MPEG-4, MPEG-2, WMV (Windows Media Video), MOV (Movie Maker), AVI is popular video compression standard p. 65 Next
34 The World Wide Web What is virtual reality (VR)? Use of computers to simulate real or imagined environment Appears as a three dimensional (3-D) space Used for games and many practical applications p. 65 Next
35 The World Wide Web What are plug-ins? Programs that extend the capability of a browser You can download many plug-ins at no cost from various Web sites Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Plug-Ins below Chapter 2 p. 66 Fig Next
36 Web Publishing What is Web publishing? Development and maintenance of Web pages Step 1. Plan the Web site Step 2. Analyze and design the Web site Step 3. Create the Web site Step 5. Maintain the Web site Step 4. Deploy the Web site p Fig Next
37 E-Commerce What is E-Commerce? Short for electronic commerce Business transaction that occurs over the Internet Business to consumer (B2C) Sale of goods to general public Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click E-Commerce below Chapter 2 Consumer to consumer (C2C) One consumer sells directly to another Business to business (B2B) Business providing goods and services to other businesses p. 67 Fig Next
38 Other Internet Services What is ? Short for electronic mail The transmission of messages and files via a computer network Messages can consist of simple text or can contain attachments, such as documents, graphics, or audio/video clips Internet access providers usually provide an program Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click below Chapter 2 p. 69 Next
39 Video: Basics Learn how to use quickly and efficiently low quality (click to start) high quality (click to start) Next
40 Other Internet Services How do you send an message? Step 1. Start an program (Microsoft Outlook, for example) Step 2. Click the New Mail Message button Step 3. Enter the recipient s address, the subject, and the message Step 5. The recipient opens the message Step 4. Click the Insert file button if you want to attach a picture, for example, and click Send p. 70 Fig Next
41 Other Internet Services What is an address? Unique name that consists of a user name and domain name that identifies the user p. 70 Fig Next
42 Other Internet Services How does an message travel? Step 1. Using software, you create and send message Step 2. Your software contacts software on your ISP s outgoing mail server Step 4. When recipient uses software to check for messages, the message transfers from incoming mail server to recipient s computer Step 3. Software on outgoing mail server determines best route for data and sends message, which travels along Internet routers to recipient s incoming mail server p. 70 Fig Next
43 Other Internet Services What is FTP? File Transfer Protocol Internet standard that permits you to upload and download files with other computers on the Internet p. 71 Next
44 Other Internet Services What are newsgroups and message boards? Newsgroup Online area where users discuss a particular subject Message board Type of discussion group Many Web sites use message boards because they are easier to use Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Newsgroups and Message Boards below Chapter 2 p. 71 Fig Next
45 Other Internet Services What is a mailing list? Group of addresses given a single name When a message is sent to the mailing list, everyone on the list receives the message To add your name to a mailing list you must subscribe to it; to remove your name you must unsubscribe Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Mailing Lists below Chapter 2 p. 71 Next
46 Other Internet Services What is a chat? Real-time typed conversation that takes place on a computer Chat room is location on server that permits users to discuss topics of interest Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Chat Rooms below Chapter 2 p Fig Next
47 Other Internet Services What is instant messaging (IM)? A real-time Internet communications service that notifies you when one or more people are online and allows you to exchange messages or files Step 1. Login to the IM server Step 2. The server determines if any of your established friends, family, or coworkers, called buddies, are online Step 5. Your buddy replies Step 4. Your Instant Message travels through a messaging server and then to the online buddy Step 3. You send instant messages to an online buddy p. 72 Fig Next
48 Other Internet Services What is internet telephony? Enables users to speak to other users over the Internet using their computer Click to view Web Link, click Chapter 2, Click Web Link from left navigation, then click Internet Telephony below Chapter 2 p. 73 Fig Next
49 Netiquette What is netiquette? Code of acceptable behaviors users should follow while on the Internet Golden Rule: Treat others as you would like them to treat you. p. 73 Next
50 Summary of the Internet and World Wide Web History and structure of the Internet Newsgroups and Message Boards The World Wide Web Chat Rooms and Instant Messaging Internet Telephony FTP Netiquette Chapter 2 Complete
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