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title: Network Questions
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permalink: /questions/network-questions/index.html
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* Traditionally, why has it been better to serve site assets from multiple domains?
* Do your best to describe the process from the time you type in a website's URL to it finishing loading on your screen.
* What are the differences between Long-Polling, Websockets and Server-Sent Events?
* Explain the following request and response headers:
  * Diff. between Expires, Date, Age and If-Modified-...
  * Do Not Track
  * Cache-Control
  * Transfer-Encoding
  * ETag
  * X-Frame-Options
* What are HTTP methods? List all HTTP methods that you know, and explain them.
* What is domain pre-fetching and how does it help with performance?
* What is a CDN and what is the benefit of using one?