Many employers report that the best candidates are ones that ask thoughtful questions. Indeed, many employers focus on the quality of a candidate’s questions rather than on the content of his/her answers.

Individuals who fail to ask questions often appear to lack interest and enthusiasm. They are perceived to be more concerned about getting the job offer than with exchanging information about themselves and the position.
You can expect to be asked: “Do you have any questions?” You must be prepared with several, avoiding questions about salary and benefits. You do not want the interviewer to get the impression that you are primarily interested in compensation. Instead, clarify expectations about the position -- with whom you would be working, the extent of your responsibilities, where the company sees you in five years, the company’s goals and challenges.
Remember, you are also interviewing the company to determine whether you want to be hired. Compare what you have already learned to the gaps in your information. SAS International Dallas suggests to choose questions that fill in these gaps.