I have to take an Accounts Payable Test. Can anyone refer me to a site where example questions may be shown?

I have done some Accounts Payable, primarily just invoice processing and applying GL codes and settling discrepancies. But if applying somewhere, some places use more than that in their A/P. What is a good site to review which may have A/P type questions I may see on an A/P test which I must take for the city government? Or maybe just a good tutorial you think may contain some questions possibly posed in an A/P exam. Thanks.