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class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l5-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 5: Operating System</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l6-pt1-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 6 Pt 1: System Software</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l6-pt2-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 6 Pt 2: Logical Functions</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l7-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 7: Green Business Computing</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l8-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 8: Green Computer Networks</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l9-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 9: Internet</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l10-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 10: Business Websites</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l11-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 11: Computer Security</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l12-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 12: Introduction to SQL</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l13-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 13: Information Systems in Business</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l14-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 14: More SQL Statements</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l15-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 15: Business System Reporting</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l16-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 16: Information Technology Careers</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l17-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 17: SQL Clauses: JOIN Query</p><!--]--></a><!----></div><!----></div><div class="VPSidebarItem level-1 is-link" data-v-315243f1 data-v-315243f1><div class="item" data-v-315243f1><div class="indicator" data-v-315243f1></div><a class="VPLink link link" href="/academic/cis105/cis105-l18-lecture-note" data-v-315243f1><!--[--><p class="text" data-v-315243f1>Lect 18: Databases</p><!--]--></a><!----></div><!----></div><!--]--></div></section></div><!--]--><!--[--><!--]--></nav></aside><div class="VPContent has-sidebar" id="VPContent" data-v-89207109 data-v-4a097eb3><div class="VPDoc has-sidebar has-aside" data-v-4a097eb3 data-v-4885b148><!--[--><!--]--><div class="container" data-v-4885b148><div class="aside" data-v-4885b148><div class="aside-curtain" data-v-4885b148></div><div class="aside-container" data-v-4885b148><div class="aside-content" data-v-4885b148><div class="VPDocAside" data-v-4885b148 data-v-7045d2d5><!--[--><!--]--><!--[--><!--]--><div class="VPDocAsideOutline" role="navigation" data-v-7045d2d5 data-v-35301578><div class="content" data-v-35301578><div class="outline-marker" data-v-35301578></div><div class="outline-title" role="heading" aria-level="2" data-v-35301578>TOC</div><nav aria-labelledby="doc-outline-aria-label" data-v-35301578><span class="visually-hidden" id="doc-outline-aria-label" data-v-35301578> Table of Contents for current page </span><ul class="root" data-v-35301578 data-v-cc4b0507><!--[--><!--]--></ul></nav></div></div><!--[--><!--]--><div class="spacer" data-v-7045d2d5></div><!--[--><!--]--><!----><!--[--><!--]--><!--[--><!--[--><!--[--><!--[--><div class="VPDocAsideSponsors"><div class="VPSponsors vp-sponsor aside"><!--[--><section class="vp-sponsor-section"><!----><div class="VPSponsorsGrid vp-sponsor-grid medium"><!--[--><div class="vp-sponsor-grid-item"><a class="vp-sponsor-grid-link" target="_blank" rel="sponsored noopener"><article class="vp-sponsor-grid-box"><h4 class="visually-hidden"></h4><img class="vp-sponsor-grid-image" 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style="display:inline-block;" viewBox="0 0 16 16" width="1.2em" height="1.2em"><path fill="currentColor" d="M8 16A8 8 0 1 1 8 0a8 8 0 0 1 0 16m.847-8.145a2.502 2.502 0 1 0-1.694 0C5.471 8.261 4 9.775 4 11c0 .395.145.995 1 .995h6c.855 0 1-.6 1-.995c0-1.224-1.47-2.74-3.153-3.145"></path></svg> Author:<span>Anda Toshiki</span></div><!----><div class="flex gap-[4px] items-center"><svg style="display:inline-block;" viewBox="0 0 15 15" width="1.2em" height="1.2em"><path fill="currentColor" fill-rule="evenodd" d="M1.903 7.297c0 3.044 2.207 5.118 4.686 5.547a.521.521 0 1 1-.178 1.027C3.5 13.367.861 10.913.861 7.297c0-1.537.699-2.745 1.515-3.663c.585-.658 1.254-1.193 1.792-1.602H2.532a.5.5 0 0 1 0-1h3a.5.5 0 0 1 .5.5v3a.5.5 0 0 1-1 0V2.686l-.001.002c-.572.43-1.27.957-1.875 1.638c-.715.804-1.253 1.776-1.253 2.97m11.108.406c0-3.012-2.16-5.073-4.607-5.533a.521.521 0 1 1 .192-1.024c2.874.54 5.457 2.98 5.457 6.557c0 1.537-.699 2.744-1.515 3.663c-.585.658-1.254 1.193-1.792 1.602h1.636a.5.5 0 1 1 0 1h-3a.5.5 0 0 1-.5-.5v-3a.5.5 0 1 1 1 0v1.845h.002c.571-.432 1.27-.958 1.874-1.64c.715-.803 1.253-1.775 1.253-2.97" clip-rule="evenodd"></path></svg> Updated:<span>2 minutes ago</span></div><div class="flex gap-[4px] items-center"><svg style="display:inline-block;" viewBox="0 0 16 16" width="1.2em" height="1.2em"><path fill="currentColor" d="M9.293 0H4a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h8a2 2 0 0 0 2-2V4.707A1 1 0 0 0 13.707 4L10 .293A1 1 0 0 0 9.293 0M9.5 3.5v-2l3 3h-2a1 1 0 0 1-1-1M5.485 6.879l1.036 4.144l.997-3.655a.5.5 0 0 1 .964 0l.997 3.655l1.036-4.144a.5.5 0 0 1 .97.242l-1.5 6a.5.5 0 0 1-.967.01L8 9.402l-1.018 3.73a.5.5 0 0 1-.967-.01l-1.5-6a.5.5 0 1 1 .97-.242z"></path></svg> Words:<span>426</span></div><div class="flex gap-[4px] items-center"><svg style="display:inline-block;" viewBox="0 0 20 20" width="1.2em" height="1.2em"><path fill="currentColor" d="M10 0a10 10 0 1 0 10 10A10 10 0 0 0 10 0m2.5 14.5L9 11V4h2v6l3 3z"></path></svg> Reading:<span>2 min</span></div></section></div><h2 id="chapter-9-internet" tabindex="-1">Chapter 9: Internet <a class="header-anchor" href="#chapter-9-internet" aria-label="Permalink to "Chapter 9: Internet""></a></h2><h3 id="_9-1-internet-history" tabindex="-1">9.1: Internet History <a class="header-anchor" href="#_9-1-internet-history" aria-label="Permalink to "9.1: Internet History""></a></h3><ul><li>1969: University of California Los Angeles (UCLA) created the Advanced Research Project Agency Network (ARPANET)</li><li>1989: Hypertext Transfer Protocol (HTTP) / World Wide Web (WWW)</li><li>1993: Hypertext Markup Langauge (HTML)</li></ul><h3 id="_9-2-internet-and-www-structure" tabindex="-1">9.2: Internet and WWW Structure <a class="header-anchor" href="#_9-2-internet-and-www-structure" aria-label="Permalink to "9.2: Internet and WWW Structure""></a></h3><ul><li>he internet is a network called the Client/Server Model</li><li>The browser application software interprets HTML and HTTP to create web pages</li><li>Everything on the internet lives somewhere physically; the trick is using computer addresses to send info from one place to another</li></ul><h3 id="_9-3-internet-addresses" tabindex="-1">9.3: Internet Addresses <a class="header-anchor" href="#_9-3-internet-addresses" aria-label="Permalink to "9.3: Internet Addresses""></a></h3><ul><li>Internet Protocol Address (IP): An address system used to identify and communicate through the network</li><li>Uniform Resource Locators (URLs) <ul><li><code>https://asu.edu</code></li><li><code>https</code>: refers to standard protocol</li><li><code>www</code>: refers to the world wide web</li><li><code>Canvas.asu</code>: domain name</li><li><code>.edu</code>: a top-level domain code or extension</li></ul></li></ul><h3 id="_9-4-9-5-websites-browsers" tabindex="-1">9.4/9.5: Websites/Browsers <a class="header-anchor" href="#_9-4-9-5-websites-browsers" aria-label="Permalink to "9.4/9.5: Websites/Browsers""></a></h3><ul><li>Website: A collection of web pages on a server that exists on the web that can be requested by a client and displayed with a browser</li><li>Hyperlink: Clickable navigation element</li><li>Browser: An application software that provides an interface for the WWW</li><li>Aspects of a good website: <ul><li>Content</li><li>Interactivity</li><li>Design</li></ul></li></ul><h3 id="_9-6-browser-features" tabindex="-1">9.6: Browser Features <a class="header-anchor" href="#_9-6-browser-features" aria-label="Permalink to "9.6: Browser Features""></a></h3><ul><li>Common Browser Features <ul><li>Bookmarks: AKA favorites</li><li>Caching: Just like a CPU cache on the internet</li><li>Cookies: Text files used to track info about users</li><li>Graphics File (GIF, JPEG): Images and videos</li><li>Javascript: A programming language <ul><li>Used to make websites dynamics; Ex: Countdown timer</li></ul></li></ul></li><li>Browser Considerations: <ul><li>Security</li><li>Popup Blockers</li><li>Usability</li></ul></li></ul><h3 id="_9-7-internet-service-providers-isp" tabindex="-1">9.7: Internet Service Providers (ISP) <a class="header-anchor" href="#_9-7-internet-service-providers-isp" aria-label="Permalink to "9.7: Internet Service Providers (ISP)""></a></h3><ul><li>Connectivity: When one computer connects to another and shares info & resources</li><li>Internet Service Providers (ISP) <ul><li>Dial-up & Digital Subscriber Line (DSL)</li><li>Broadband Internet Access</li><li>Web Hosting</li></ul></li></ul><h3 id="_9-8-search-engines" tabindex="-1">9.8: Search Engines <a class="header-anchor" href="#_9-8-search-engines" aria-label="Permalink to "9.8: Search Engines""></a></h3><ul><li>Search engine: A website that lets a user type in specific key words or phrases and then return a list of hyperlinks that best match the search criteria <ul><li>Google, Bing, Yahoo</li><li>Directory searches</li><li>Metasearch Engines <ul><li>Ex: Dogpile</li></ul></li></ul></li></ul><h3 id="_9-9-e-commerce" tabindex="-1">9.9: E-Commerce <a class="header-anchor" href="#_9-9-e-commerce" aria-label="Permalink to "9.9: E-Commerce""></a></h3><ul><li>Electronic Commerce (E-Commerce): The distribution, buying, selling, advertising, and marketing of goods and services over the web <ul><li>Business-to-Business (B2B)</li><li>Business-to-Consumer (B2C)</li><li>Consumer-to-Consumer (C2C)</li></ul></li><li>The rules of business still apply to online environments</li></ul><h3 id="_9-10-security" tabindex="-1">9.10: Security <a class="header-anchor" href="#_9-10-security" aria-label="Permalink to "9.10: Security""></a></h3><ul><li>Malware: Software designed to damage a computer's system without the owner's knowledge <ul><li>Virus</li><li>Worms</li><li>Trojan Horse</li><li>Spyware</li><li>Adware</li></ul></li></ul><h3 id="_9-11-9-12-email-email-security" tabindex="-1">9.11/9.12: Email/Email Security <a class="header-anchor" href="#_9-11-9-12-email-email-security" aria-label="Permalink to "9.11/9.12: Email/Email Security""></a></h3><ul><li>Email: "A store and forward" system of composing, sending, storing, and receiving message over electronic communication systems.</li><li>Never send an email you wouldn't be willing to say in public</li><li>Phishing: An email that looks official but is malicious in nature</li><li>Spam: Unwanted mail</li></ul></div></div></main><footer class="VPDocFooter" data-v-4885b148 data-v-10ef07da><!--[--><!--[--><!--[--><!--[--><!----><!--]--><!--]--><!--]--><!--]--><div class="edit-info" data-v-10ef07da><div class="edit-link" data-v-10ef07da><a class="VPLink link vp-external-link-icon no-icon edit-link-button" href="https://github.com/andatoshiki/toshiki-notebook/edit/master/docs/academic/cis105/cis105-l9-lecture-note.md" target="_blank" rel="noreferrer" data-v-10ef07da><!--[--><svg xmlns="http://www.w3.org/2000/svg" viewbox="0 0 24 24" class="edit-link-icon" aria-label="edit icon" 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