You know what they will ask in an exam before hand. The scope is somewhat limited. I also think that these types of complaints about the difficulty of a job in

You know what they will ask in an exam before hand. The scope is somewhat limited. I also think that these types of complaints about the difficulty of a job interview have to do with tying your self-esteem to the outcome of it. A failed job interview is like a date, you both (the company and the interviewee) are trying to see if the relationship has a chance to be successful. If the interview went south, there's a decent chance that you wouldn't have been happy at that job.