"Are you fucking serious? Probably HR persons do not know what a compiler is" This is actually common. You're right, the HR person wouldn't know what a compile

"Are you fucking serious? Probably HR persons do not know what a compiler is" This is actually common. You're right, the HR person wouldn't know what a compiler is, she is following a script with admissible answers to the problems and just listening for keywords that show you have the bare knowledge to pass the screening interview. From the tone of your comments about the interview, it sounds like you seemed shocked at some questions, thought they were simplistic, etc. and probably let this show. This, I think, was the biggest factor why you didn't get it. Many interviewers have no idea how to interview, and they ask pet questions culled from online sources and friends. If they get the idea that you find some question simple or "beneath you" they take it personally. So, lesson for next time: React to all interviewer questions equally and control your frustration.