Not too bad—I scored 8 out of 9 questions right on the Free Software licensing quiz [1] which tests your knowledge of the GNU (GNU's Not Unix) GPL (General Public License) [2] and LGPL (Lesser General Public License) [3]. This is not an easy quiz either, as I thought I did worse than I actually did.
[1] http://www.gnu.org/cgi-bin/license-quiz.cgi
[2] http://www.gnu.org/licenses/gpl.txt