The webmaster quiz is based on the issues and the information that come up in the Webmaster Help Forum. It has been designed by Google together with the Bionic Posters. The questions are objective with multiple choices, aimed at testing the knowledge and skills about Google's interaction with the webmasters' sites.
If you want to prove your unmatched web skills or improve upon it, then all you need to do is just take the quiz once and save your answers. The Google will publish its list of correct answers after 27th January. Don't forget to check this list once it’s out on Google Webmaster Blog.