internet.pptx

History of the Internet How did the Internet originate? ARPANET Networking project by Pentagon’s Advanced Research Projects Goal: Agency (ARPA)...

History of the Internet How did the Internet originate? ARPANET Networking project by Pentagon’s Advanced Research Projects Goal: Agency (ARPA) Goal: To allow scientists To function if at different part of network locations to share were disabled information Became functional September 1969 History of the Internet How has the Internet grown? Today More than 350 million host nodes 1984 More than 1,000 host nodes 1969 Four host nodes Next History of the Internet Who controls the Internet? ⮚ No one — it is a public, cooperative, and c c independent network ⮚ Several organizations set standards World Wide Web Internet2 (I2) Consortium (W3C) ▪ Internet-related research and development project ▪ Oversees research, sets standards and guidelines ▪ Develops and tests advanced Internet technologies ▪ Tim Berners-Lee, director Next  How the Internet Works How can you connect to the Internet? Slow-speed High-speed technology connection Dial-up access Digital subscriber line (DSL), modem in your cable telephone Internet computer uses a services (CATV), cable modem, standard telephone line fixed wireless, and satellite modems to connect to the Internet Connection must be established Connection is always on— each time you log on. whenever the computer Slow but inexpensive is running p. 70 Next How the Internet Works What are ways to access the Internet? 1. ISP, Regional or National 2. OSP (AOL and MSN, for example) 3. Wireless Internet Service Provider Next How the Internet Works What is a domain name? ⮚ Text version of Internet protocol (IP) address ▪ Number that uniquely identifies each computer or device connected to Internet Next  The World Wide Web 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. 75 Next The World Wide Web What is a Web browser? ⮚ Program that allows you to view Web pages Microsoft Netscape Internet Mozilla Explorer Firefox Opera Safari Next The World Wide Web What is downloading? ⮚ The process of a computer receiving information ⮚ Depending upon connection speed, downloading can take from a few seconds to several minutes Next The World Wide Web 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 Next The World Wide Web What is a search engine? ⮚ Program used to find Web sites and Web pages by entering words or phrases called search text ▪ Also called a keyword Next The World Wide Web 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 Next The World Wide Web What are the eleven basic types of Web sites? ⮚ Portal ⮚ News ⮚ Informational ⮚ Business/Marketing ⮚ Educational ⮚ Entertainment ⮚ Advocacy ⮚ Blog ⮚ Wiki ⮚ Content Aggregator ⮚ Personal Next The World Wide Web What is a portal? ⮚ A Web site that offers a variety of services from one, convenient location, usually for free ▪ Searching, sports, e-mail, news, weather, auctions, Web communities (Web sites that join people with similar interests) Next The World Wide Web What is a news Web site? ⮚ Contains newsworthy material ⮚ Stories and articles relating to current events, life, money, sports, and the weather Next The World Wide Web What is an informational Web site? ⮚ Contains factual information ⮚ Created by organizations and government agencies Next The World Wide Web What is a business/marketing Web site? ⮚ Contains content that promotes products or services ⮚ Allows you to purchase products or services online Next The World Wide Web What is an educational Web site? ⮚ Offers avenues for formal and informal teaching and learning ▪ Some companies offer online training for employees ▪ Some colleges offer online classes and degrees Next The World Wide Web What is an entertainment Web site? ⮚ Offers an interactive and engaging environment featuring music, video, sports, games, and more Next The World Wide Web What is an advocacy Web site? ⮚ Contains content that describes a cause, opinion, or idea Next The World Wide Web What is a blog? ⮚ Uses a regularly updated journal format to reflect the interests, opinions, and personalities of the author and sometimes site visitors Next The World Wide Web What is a wiki? ⮚ Collaborative Web site that allows users to add to, modify, or delete the Web site content via their Web browser Next The World Wide Web What is a content aggregator? ⮚ Business that gathers and organizes Web content and then distributes, or feeds, the content to subscribers for free or a fee Next The World Wide Web What is a personal Web site? ⮚ Web page maintained by private individual ⮚ Reasons: sharing life experience with the world or job hunting Next The World Wide Web What are the guidelines for evaluating the value of a Web site? Affiliatio Audience Authority Content n Objectivit Currency Design y Next The World Wide Web What is multimedia? ⮚ Application integrating text with other media elements ▪ Graphics ▪ Animation ▪ Audio ▪ Video ▪ Virtual reality ▪ Plug-Ins Next The World Wide Web What graphics formats are used on the Web? JPEG PNG BMP (pronounced JAY- (pronounced ping) peg) GIF TIFF (pronounced JIFF) Next The World Wide Web What is a thumbnail? ⮚ Small version of a larger graphic —used to c improve Web page display time ▪ Usually click on thumbnail to display larger graphic Next The World Wide Web What is animation? ⮚ Appearance of motion created by displaying a series of still images in sequence Next The World Wide Web 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 Next The World Wide Web What is streaming audio? The process of Enables you to transferring listen to music audio as it in a downloads continuous to your and even flow computer Next The World Wide Web What is video? ⮚ Consists of full-motion images that are played back at various speeds ⮚ MPEG (Moving Pictures Experts Group) is popular video compression standard Next 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 Next 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 Next Web Publishing What is Web publishing? ⮚ Development and maintenance of Web pages Step 2. Step 1. Analyze and Plan the design the Web site Web site Step 3. Create the Web site Step 5. Maintain Step 4. the Web site Deploy the Web site Next 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 Consumer to consumer (C2C) One consumer sells directly to another Business to business (B2B) Business providing goods and services to other businesses Next Other Internet Services What is an e-mail address? ⮚ Unique name that consists of a user name and domain name that identifies the user Next Other Internet Services What is FTP? ⮚ File Transfer Protocol—Internet standard that allows you to upload and download files with other computers on the Internet Next 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 Next 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 Next 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. 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