Transcript Web Basics
Computers: Information Technology in Perspective Larry Long & Nancy Long Computers: Information Technology in Perspective By Long and Long Copyright Copyright 2002 2002 Prentice Prentice Hall, Hall, Inc. Inc. Going Online Chapter 7 Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc. Let’s Go Surfing 7.3 Monthly Technology Update Quit What Is the Internet? 7.4 Quit The Net is a worldwide collection of interconnected networks. Internet History Quit 7.5 ARPANET 1969-1990 Internet InterNIC No person or organization governs the Internet! Internet How do you get on? 7.6 Quit Via dial-up connection to Information Service Gateway (ex: AOL) Internet Service Provider (ISP) Via direct network connection using a shared high-speed line on LAN Connect via Information Service Gateway 7.7 Quit Example: America You Online have to have PC and modem Monthly service charge You get User ID and password Communications software User’s guide Connect via Internet Service Provider 7.8 Quit ISP Gives you direct access via a dialup connection Do not offer extended information services, just a connection Connect via Network Connection 7.9 Quit Faster Wired into Internet via LAN Types of line connections: DSL line (9 M bps) T-1 line (1.544 M bps) T-3 line (44.736 M bps) Internet Terminology 7.10 Quit Transmission Control Protocol/ Internet Protocol (TCP/IP) Packets Point of Presence (POP) Point-to-Point Protocol (PPP) Going Online Without a PC 7.11 Quit Televisions Set-top box linked to existing TV Internet appliance Telephone Cellular phone ISPs offerings Retrieve/View Internet Information 7.12 Quit Client/server programs Browsers Internet Explorer Netscape The Internet address (URL) Identifies location of server site Files are downloaded for viewing Uniform Resource Locator 7.13 Quit http://www.prenhall.com/long/9e/main.html Access Method Or Protocol Domain Name Directory Filename URL: Access Methods 7.14 Quit http:// Hypertext Transport Protocol ftp:// File Transfer Protocol news:// Newsgroups gopher:// Gopher menu tree URL: Top-Level Domains (TLDs) 7.15 Quit ID .com .edu .firm .gov .int .mil .net .org Affiliation Commercial Education Businesses Government International Military Network Resources Nonprofit Organizations HTML 7.16 Quit HyperText Markup Language Scripting language Interpreted by browsers XHTML ASCII text documents Tags <TITLE ALIGN=CENTER>Title text</TITLE> Are you addicted to the Net? 7.17 Quit Browser Functions 7.18 Quit Retrieve & view Internet-based info Interact with servers View electronic documents HTML/XHTML Applets or ActiveX controls Download and upload info E-mail Newsgroups Browser Concepts 7.19 Quit Web Site Home page Page Graphics, text, audio, video, animation Hyperlinks Hypertext, hot images, hot icons Search Engines Browser Elements Quit 7.20 Menu Bar Toolbar URL Bar Workspace Status Bar Browser Plugins 7.21 Quit Enhance functionality of browsers Shockwave Player www.macromedia.com Flash Player www.macromedia.com RealJukebox www.real.com RealPlayer www.real.com Liquid Player www.liquidaudio.com Quicktime www.apple.com iPIX Movies www.ipix.com Acrobat Reader www.adobe.com Finding Resources & Information 7.22 Quit Browsing the Net Start with a portal (Yahoo) Divided into major categories Searching hints: Read search rules Try another search engine Results seldom exhaustive Choose search words carefully BE PERSISTENT! Going Online Ask someone – FAQs, newsgroups Search Tools 7.23 Quit Yahoo Ask Infoseek Google AltaVista Excite Northern HotBot Light Jeeves Snap MSN Netscape Search Metacrawler Dogpile Internet Applications 7.24 Quit Web Servers User-friendly Multimedia Hyperlinks FTP File Transfer Protocol Download/upload files Anonymous FTP Interactive Frames Gopher Telnet Webcasting 7.25 Quit Radio broadcasting Real-time audio streaming Pull vs. push technology Digital Jukebox 7.26 Quit Software Microsoft Real Networks Download to MP3 players Can also play videos Communicating With People 7.27 Quit E-mail USENET Newsgroups Bulletin boards Threads Mailing lists or listservs Internet relay chat (IRC) Audio mail Internet Telephone User Location Service Conferencing Whiteboarding Application Sharing Videophone/video conferencing Instant messaging E-mail Quit 7.28 [email protected] [email protected] To CC: and/or BCC:) Subject Message Attached file(s) Reply Reply to all Forward Username@domain or email server The E-mail Post Telecommuting e-mail message response options Office Protocol Going Online The End Computers: Information Technology in Perspective By Long and Long Copyright 2002 Prentice Hall, Inc.