How to answer 11 fiendishly hard interview questions posed by Google, Microsoft, and Dropbox

If you're the type of person who's into cloud file storage, you're probably eyeing one of these three companies to work for: Google, Microsoft, or Dropbox.

But they're also some of the most popular companies in Silicon Valley, and extremely difficult to get into.

These 11 questions and suggested answers we found on Glassdoor will help you better prepare for a potential job interview with them.