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The Internet & the WWW Chapter 8 Working Online © The McGraw-Hill Companies, Inc., 2000 Overview • • • • The Internet The World Wide Web Online services New Internet technologies • Net downside issues Ch 8 © The McGraw-Hill Companies, Inc., 2000 2 CCI The Internet: Connections, Features, and Addresses • Internet is an international network connection of over 400,000 networks in more than 200 countries • While English dominates current sites, Chinese is predicted to overtake English in sites by 2005 • Many sites have translated attached sites or provide simultaneous translation Ch 8 © The McGraw-Hill Companies, Inc., 2000 3 CCI Internet Origins • ARPAnet was formed by the US government to aid in communicating research • Secondarily, it was designed to maintain network communications among military units in the event of a nuclear attack Ch 8 © The McGraw-Hill Companies, Inc., 2000 4 CCI TCP/IP • Transmission Control Protocol/Internet Protocol • Sends packets of information over fastest routes, then reassembled at destination in original order • Allows communication among different operating systems Ch 8 © The McGraw-Hill Companies, Inc., 2000 5 CCI Internet Connection • Direct connection through business or educational institution • Your own system – communications line – update and configure modem – select access provider (ISP) or online service Ch 8 © The McGraw-Hill Companies, Inc., 2000 6 CCI Setup • May setup through Wizards • May setup through entering dialup numbers, POP, and SMTP servers • Considerations – – – – Ch 8 survey others on a proposed service verify responsiveness through ratings cost options access to e-mail through another ISP © The McGraw-Hill Companies, Inc., 2000 7 CCI Internet Tools • • • • • • • Ch 8 World Wide Web E-mail Usenet newsgroups Mailing lists, listservs FTP, file transfer protocol Telnet, allow logon as a client computer Gopher © The McGraw-Hill Companies, Inc., 2000 8 CCI FAQs • Frequently Asked Questions • Netiquette – CAP LOCKS are the equivalent of yelling • Emoticons • Spam, spamming – software is available to help control unwanted e-mail in an inbox Ch 8 © The McGraw-Hill Companies, Inc., 2000 9 CCI Emoticons • • • • • • • • Ch 8 :-) happy face :-( sorrow :-() shock :-/ sarcasm ;-) wink :-| anger :/ hmmm :-D laugh • • • • :-@ scream <g> grin <BTW> by the way <IMHO> in my humble opinion • <FYI> for your information • <nc> no comment • <jk> just kidding © The McGraw-Hill Companies, Inc., 2000 10 CCI Internet Addresses • Domain Name System • Domain – user ID, subdomain, domain (location), root domain (domain type), and country • com, edu, gov, mil, net, org Ch 8 © The McGraw-Hill Companies, Inc., 2000 11 CCI Web Addresses • URL – Uniform Resource Locator • http:// – hypertext transfer protocol • ftp:// – file transfer protocol • gopher:// – gopher protocol Ch 8 © The McGraw-Hill Companies, Inc., 2000 12 CCI Formats • HTML – hypertext markup language • html – Microsoft variants • htm • asp – active server pages • XML – extensible markup language Ch 8 © The McGraw-Hill Companies, Inc., 2000 13 CCI Format Help • HTML – tutorials • http://www.webmonkey.com • http://www.cnet.com • XML – tutorial • http://www.ibm.com Ch 8 © The McGraw-Hill Companies, Inc., 2000 14 CCI Domain Name System • DNS • Visit the Internet Assigned Numbers Authority – http://www.iana.com – $75 for a limited time • Other services will assign DNSs for an additional fee Ch 8 © The McGraw-Hill Companies, Inc., 2000 15 CCI Uses of the Web • Performing research – Encyclopedia • http://www.encarta.com – Internet Public Library • http://www.ipl.com – Library of Congress • http://www.loc.gov Ch 8 © The McGraw-Hill Companies, Inc., 2000 16 CCI More Uses • Chatting – communicate with a group – use proper etiquette – some monitored, some not • News – MSNBC • http://www.msnbc.com – ESPN • http://www.espn.com Ch 8 © The McGraw-Hill Companies, Inc., 2000 17 CCI Uses… • Software: freeware and shareware – http://www.shareware.com – http://www.download.com • Classes and tutorials – degrees, diplomas, certifications • Travel plans – http://www.expedia.com – http://www.travelocity.com Ch 8 © The McGraw-Hill Companies, Inc., 2000 18 CCI Uses... • Weather – http://weather.com – http://www.hawaiiweathertoday.com/mwt/ • Shopping – http://www.amazon.com – http://www.cdnow.com • Investments Ch 8 © The McGraw-Hill Companies, Inc., 2000 19 CCI Web Importance - Retail • Business to Customers – B-to-C – up to $20 billion in 2002 – will change but not eliminate retail Ch 8 © The McGraw-Hill Companies, Inc., 2000 20 CCI Web Importance - Business • Business to Business – B-to-B – up to $3 trillion in 2002 – costs savings can be ten to one Web-based versus traditional business-to-business model – major transformation of most businesses Ch 8 © The McGraw-Hill Companies, Inc., 2000 21 CCI Browser Tools • Hyperlink always easy navigation on the Web and within information bases • History – allows returning to previously visited sites • Bookmarks or Favorites – titles and URLs of Web pages – Internet Explorer, Netscape Navigator install with a preset list Ch 8 © The McGraw-Hill Companies, Inc., 2000 22 CCI Cookies • Cookies are text files sent – by Web servers • Record visited sites, pages, passwords, and other information • Can purchase software that controls cookies or surf from an anonymous site – however, some sites do not allow access without cookie acceptance Ch 8 © The McGraw-Hill Companies, Inc., 2000 23 CCI Searching the Web • Search Engines – Yahoo! - most-used general purpose search site • http://www.yahoo.com – Excite - broad topics • http://www.excite.com – Ask Jeeves - basic questions • http://www.askjeeves.com Ch 8 © The McGraw-Hill Companies, Inc., 2000 24 CCI More Searching • HotBot - specific detailed information – http:/www.hotbot.com • Lycos - advanced search, educational – http://www.lycos.com • Alta Vista - exhaustive and precise searches – http://www.altavista.com Ch 8 © The McGraw-Hill Companies, Inc., 2000 25 CCI Search Helpful Hints • Pick search site according to information needs • Use words and phrases that are common • Use logical operators : AND, OR, NOT • Use “open new window” to retain original site page • Use the site’s help section • Limit your time Ch 8 © The McGraw-Hill Companies, Inc., 2000 26 CCI Multimedia on the Web • Use of plug-ins – Real Player - video and audio • http://www.realaudio.com – Live 3D- virtual reality • http://www.netscape.com – Shockwave • http://www.macromedia.com • Each maker of a plug-in offers additional software for Web development Ch 8 © The McGraw-Hill Companies, Inc., 2000 27 CCI Designing Pages • HTML – can use a simple text processor such as Notepad • Design of large sites – Microsoft Front Page • has some additional functionality that may require Front Page extensions on the Web server – Adobe PageMill – Soft Quad XMetal and HotMetal Ch 8 © The McGraw-Hill Companies, Inc., 2000 28 CCI Site Setup for Business • For business – must include validation, security, firewalls, and monetary transaction capabilities • Business mistakes – not culturally aware – not build for scalability and future increase in traffic Ch 8 © The McGraw-Hill Companies, Inc., 2000 29 CCI Push Technology • 1998 push was widely discredited and automatic installation from Windows 98 SE was stopped • The idea that information should be pushed to the user ignored the bandwidth of customers and other limited bandwidth by corporate users • Push-media still available from PointCast, Ifusion, and others Ch 8 © The McGraw-Hill Companies, Inc., 2000 30 CCI Online Services • Online services mostly built on the concept of community-building – AOL, CompuServe, MSN, Prodigy – ease of finding information – tailored to interests • Portals – gateways expanding the functions of much offered by online services Ch 8 © The McGraw-Hill Companies, Inc., 2000 31 CCI Portals and ISPs • Niche portals – for certain interests • ISPs – Internet Service Providers – add more and more content including features traditionally the domain of online services and portals Ch 8 © The McGraw-Hill Companies, Inc., 2000 32 CCI Telephone, Radio, Television, and 3d Technologies • Telephones on the Net – quality is improving • Radio – as bandwidth improves, more like real radio – http://www.real.com • Television – RealPlayer – WebTV Ch 8 © The McGraw-Hill Companies, Inc., 2000 33 CCI Advances • 3D on the Net – bandwidth challenge – Virtual Reality Modeling Language, VRML as a standard – Silicon Graphics offers browser plug-in • http://www.sri.com Ch 8 © The McGraw-Hill Companies, Inc., 2000 34 CCI Net Loss? • Not a library, mostly is television • Not about information, mostly marketing • Use for entertainment Ch 8 © The McGraw-Hill Companies, Inc., 2000 35 CCI