TAILIEUCHUNG - Introduction to Computing (22)

CSC to Computing Lecture 22 Dr. Iftikhar Azim Niaz. ianiaz@. 1 Last Lecture Summary Evolution and history of Internet. q ARPANET. q NSFNet. q Internet connection service. q Cable internet service. q DSL. q FTTP. q Fixed wireless. q Cellular Radio Network, Wi-Fi, Satellite internet. 2 Last Lecture Summary Internet Major Services. q Web. q E-mail, mailing list. q News, newsgroup, message board. q FTP. q Instant Messaging, Chat. q VoIP. q Peer-to-peer WWW and IP Streaming Audio and Video. 3Objectives Overview. 4 Uniform Resource Type://Address/ Type – type of server (protocol, http://).n Address – address of the Path – location within the file structure of. server. 5 URL and Web A Web page. has a unique. address called. a URL or Web. A web server. delivers the. Web page to. your computer. 6 Using a Browser And The Web pages and Web Browser starts on the home. Navigating the web. q Enter a URL in the browser. q Click a hyperlink. n Links are typically blue underlined. words. q Image maps are picture links. q Store the URL in the browser’s. Favorites / Bookmarks When finished, close the 7History and Help. 8 Home Page and A home page is the first. page that a Web site. Web pages provide links. to other related Web. pages. q Surfing the Downloading is the. process of receiving. Some Web pages are. designed specifically for. microbrowsers. 9Displaying Home Page. 10Components of IPv4 and IPv6 .addresses. 11 Built-in connection to. another related. Web page location. q Item found elsewhere. on same Web page. q Different Web page. at same Web site. q Web page at a different Web site. 12 Recognizing Pointer changes to a. small hand when you. point to a A link can be text or. an Text links are usually. underlined and in a. different color 13 Tabbed allows you to open and view multiple Web. pages in a single Web browser window. 14 Web Browser Market Windows Internet Explorer (IE) currently is the. most popular browser, with approximately 68. percent of the market share. 15 Websites that Mobile Internet User .n visit. More than 87 million individuals subscribe to a. wireless Internet service provider. 16 Search Two types of search tools are search engines. and subject directories. 17 Subject A subject directory provides categorized lists of. Search tool with organized set of topics and. Lets you find information by clicking links rather. than entering specializes in linking to other web sites and. categorizing those not a search engine and does not display lists. of web pages based on keywords; instead, it. lists web sites by category and subcategory

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