If you fail to prepare, then prepare to fail...

An interview is a two-way street. At the end of a job interview, when the interviewer has asked all pre-determined questions and now turns to you and says "Is there anything you'd like to ask me?" it is very useful to have planned a list of questions to ask. Having nothing prepared sends the message that you don't have an independent thought process and that you are not interested in the role. 

Even though some of your questions can be answered during the process of the interview, you can always state something to the effect that you were interested in knowing about, but that has already been addressed during the interview. Also, you can ask for additional clarification if the situation allows you to.

Here are several ideas of questions to ask:

What are some of the skills and abilities necessary for someone to succeed in this job?
Who will review my performance? How often?
Could you describe your company's management style and the type of employee who fits well with it?
Can you describe an ideal employee?
What are the company's growth plans?  

Here are a few tips to bear in mind:

Remember that honesty really is the best policy
Smile where appropriate, and show enthusiasm for the company and position 
Find opportunities to sell yourself, relating your skills to the position   
Remain motivated and give positive responses    
Show that you have researched the company      
Don't criticise your previous employers or colleagues
Take time if necessary to answer a question, give yourself time to think
Seek clarification if you are unsure of the meaning of the question   
If you can't answer a question, be honest       
Keep your answers clear and to the point   
Ask when you'll be given a decision and when you can expect to hear from them
Tell them you are interested in the job if you are     
Thank the interviewer for seeing you

Hope this helps!

If you'd like any more advice on interviews, why not connect with me on LinkedIn?