Sometimes you are so excited that you got the interview, you don't pay attention to what's being asked. Or maybe you're nervous and want to make a good impression and answer all the questions. But there are some things a prospective employer cannot ask you.

1) Have you ever been arrested? An employer can't actually legally ask you about your arrest record, but they can ask if you've ever been convicted of a crime so there is a way around that.
2) Are you married? They may want to know how much time you'd be able to commit to your job, it's illegal because it reveals your marital status and can also reveal your sexual orientation.
3) Do you have children? It is unlawful to deny someone employment if they have children or if they are planning on having children in the future.

4) What country are you from? If you have an accent, this may seem like an innocent question, but keep in mind that it's illegal because it involves your national origin. However, they can ask if you're authorized to work in a certain country.

5) Do you have any outstanding debt? Employers have to have permission before asking about your credit history. Similar to a criminal background history, they can't disqualify you from employment unless it directly affects your ability to perform the position you're interviewing for.

6) Do you drink socially? Employers cannot ask about your drinking habits because it violates the Americans With Disabilities Act of 1990.