Depends where you're going. Top companies like Google, Facebook, Microsoft, etc are looking for people who can pass some tough CS questions, whereas more stand

Depends where you're going. Top companies like Google, Facebook, Microsoft, etc are looking for people who can pass some tough CS questions, whereas more standard corporate or mid-stage startups are going to be a bit more lax. I've seen everything from "parse this integer from a string without your language's built in parse function" to "build a small database schema using ER diagrams" to "write us a P2P chat server with a central login server".