There is a well known open ended interview question - "what happens when you type a url in a browser and hit enter?". I have many a times imagined (I have never been asked this exact question) overwhelming the interviewer with details, that comes in waves, by going deeper and deeper, by asking rhetorical questions like "but what happens there" loudly and not caring what he answers, almost channeling Sheldon Cooper. In this fun scenario , I restricted myself to network stack of the OS and routing mechanism. However, I recently found this article http://danluu.com/navigate-url/ that is much more hardcore. It is now one of my favorite, if not all time.