What is a PHP function that takes incoming requests and transforms them into a response?

What defines a URL to a page?

True or False? To build a form in Symfony2 you must build a form object and then render it in a template.

True or False? The Symfony2 Framework can be altered to one's preferences or replaced entirely.

What are the 2 options you have to install a Symfony2 distribution?

Which of the following methods checks the 3 different values in PHP that can show whether or not the user is connecting via a secured connection?