Asking questions in an interview will definitely enhance your prospects of obtaining a job. Many people get so nervous in the interview setting that they do not ask questions. Others may feel that by the end of the interview, the employer has answered all of the questions. It is essential that you ask questions! This shows the employer that you have researched the job and that you are interested in the company.
Ask about the typical day on the job.
Ask how they see you fitting into the position.
Ask about specific duties to see if you fit the job description.
Ask about the company culture.
Ask what the next step is in the interview process.
Ask about the salary on the first interview.
Ask about vacation time.