☛ 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 actions? List all HTTP actions that you know, and explain them.