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CIS 250 Advanced Computer Applications

CIS 250 Advanced Computer Applications. Internet/WWW Review. Internet Review. Internet – global network of networks WWW – system of Internet servers supporting specially formatted documents HTML – Hypertext Markup Language Language web documents are formatted in

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CIS 250 Advanced Computer Applications

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  1. CIS 250Advanced Computer Applications Internet/WWW Review

  2. Internet Review • Internet – global network of networks • WWW – system of Internet servers supporting specially formatted documents • HTML – Hypertext Markup Language • Language web documents are formatted in • Weather, sports, email, reference info, entertainment, financial services and much more! University of South Alabama - CIS 250

  3. Connecting to the Internet • Three components needed • Communications capability (modem, LAN connection) • Internet Account/ISP • Software University of South Alabama - CIS 250

  4. Activities & Issues • Downloading – transfer from an outside source to your computer • Uploading – transfer from your computer to another device • FTP programs • Vulnerabilities – viruses and worms • Antivirus programs University of South Alabama - CIS 250

  5. Components of the Web • Web Server – stores hypertext/hypermedia documents and makes them available • Web Client – PC or device used to access files held on web servers • Web Browser – software application used to locate and display web docs • Netscape Navigator • Internet Explorer University of South Alabama - CIS 250

  6. Web Documents and Web Sites • Formatted in HTML • Hyperlink tags used to link multiple HTML docs together and to connect to other web sites • Web Page – one HTML document • Web Site – collection of related web pages • Home Page – main page of a web site; also defined as the first page displayed when you open your browser University of South Alabama - CIS 250

  7. Addressing on the Web • Every device on a network has an IP address • Unique 32-bit numeric address identifying a specific device • Domain name address – text name identifying one or more IP addresses (ex: Microsoft.com represents about a dozen IP addresses) • Domain Name Addresses are translated into IP addresses by a Domain Name Service University of South Alabama - CIS 250

  8. URLs • Uniform Resource Locator – Identifies document residing on a web server • Parts • Transfer protocol (http or ftp) • Domain name of host server • Pathname (if applicable) • File name of document http://www.webopedia.com/TERM/U/URL.htm University of South Alabama - CIS 250

  9. Elements of a Web Browser • Same program components as many other apps • Scroll bars • Status bars • Tool bar • Home, history, back, forward, reload/refresh, stop, favorites, address line • Save web pages to disk or send via email University of South Alabama - CIS 250

  10. CIS 250Advanced Computer Applications Internet/WWW Review

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