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#efefef}.footer{padding-top:3rem}.footer-text{font-size:.8rem}</style></head><body class=""><div class="topbar"></div><div class="container"><a class="skip-link" href="#main-content">Skip to main content</a><nav class="nav"><ul class="navigation" id="navigation"><li class="navigation-item-emoji navigation-item-home"><a class="navigation-anchor" href="/'Front-end-Developer-Interview-Questions/'/" title="Home"><em>★</em><span>Front-end Developer Interview Questions</span></a></li><li class="navigation-item-emoji navigation-item-translations"><a class="navigation-anchor" href="/'Front-end-Developer-Interview-Questions/'/translations" title="Translations"><em>🌐</em><span>Translations</span></a></li><li class="navigation-item navigation-questions-label"><button class="navigation-toggle" id="navigation-toggle">Questions:</button></li><li class="navigation-item navigation-questions"><ul class="navigation navigation-questions-list"><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/general-questions/" title="General Questions">General</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/html-questions/" title="HTML Questions">HTML</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/css-questions/" title="CSS Questions">CSS</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/javascript-questions/" title="JavaScript Questions">JavaScript</a></li><li class="navigation-item"><a rel="external noreferrer noopener" target="_blank" class="navigation-anchor navigation-questions-anchor" href="https://scottaohara.github.io/accessibility_interview_questions/" title="Accessibility Questions (external link)">A11y</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/testing-questions/" title="Testing Questions">Testing</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/performance-questions/" title="Performance Questions">Performance</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor current" href="/'Front-end-Developer-Interview-Questions/'/questions/network-questions/" title="Network Questions">Network</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/coding-questions/" title="Coding Questions">Coding</a></li><li class="navigation-item"><a class="navigation-anchor navigation-questions-anchor" href="/'Front-end-Developer-Interview-Questions/'/questions/fun-questions/" title="Fun Questions">Fun</a></li></ul></li></ul></nav><main id="main-content" tabindex="-1"><header class="header"><h1 class="header-big-title">Network Questions</h1></header><div class="content"><ul><li>Traditionally, why has it been better to serve site assets from multiple domains?</li><li>Do your best to describe the process from the time you type in a website’s URL to it finishing loading on your screen.</li><li>What are the differences between Long-Polling, Websockets and Server-Sent Events?</li><li>Explain the following request and response headers:<ul><li>Diff. between Expires, Date, Age and If-Modified-…</li><li>Do Not Track</li><li>Cache-Control</li><li>Transfer-Encoding</li><li>ETag</li><li>X-Frame-Options</li></ul></li><li>What are HTTP methods? List all HTTP methods that you know, and explain them.</li><li>What is domain pre-fetching and how does it help with performance?</li><li>What is a CDN and what is the benefit of using one?</li></ul></div><div class="content-edit"><a rel="external noreferrer noopener" target="_blank" href="https://github.com/h5bp/Front-end-Developer-Interview-Questions/tree/master/src/questions/network-questions.md">Edit this page</a></div></main><footer class="footer"><p class="footer-text">Copyright © 2012 - 2021. 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