I think you need to do your own homework. This is really easy stuff. I mean if you took 5 seconds and even Googled it, you would be much farther ahead then you are here, waiting for people to give you the answers.
Why don't you start out by telling us what you DO know so far, and what you predict you will find? In other words, start by formulating an hypothesis (we can help you refine it, but you should put the effort into starting it), and then work toward an experiment that will test your hypothesis. Until you show us some effort on your part, we cannot offer any help.