How to correctly register any parameter in the url?

Question

HTML

Maybe I'm asking something wrong, but I need to check how the page works if any parameter is passed to the address bar. I pass like this: site/page.html?test , i.e. I add ?test at the end of the address, but it still goes to site/page.html in the address.
How to do this correctly? It doesn't matter what to transfer, this is for the Google advertising test

Answer 1

This is how it works - that is, it returns the same page.html (unless, by reference with the parameter ). Unless, of course, nothing is written.