Getting an interview for that dream job is a perfect chance to sell yourself and you need to make sure that you get everything right.
Preparation is vital and it goes without saying that you should turn up for the interview knowing everything there is to know about your prospective employers and the role that you have applied for.
Of course, no two interviews are ever the same and the line of questions that you take will be determined by the nature of the company and the people who are interviewing you.
But I have always been more impressed by candidates who ask ME questions. The process should never be one sided - you need to take control. The best way of doing this is to ask as many questions as the interviewer does.