Behold the job interview. More than other aspects of the job search, which usually take place at a comfortable distance, the interview is up close and personal, and for MBAs who just shelled out something north of $300,000 for their degrees it can seem a little daunting. Everything is riding on making a good impression. To do well with potential employers, applicants must come off as genuine, professional, and prepared (but not too prepared). Careless mistakes can easily cost you a job offer. Here are 10 of the most common interview faux pas.