The site's homepage says only "under construction". I'd like more
information about the tests, who is administering them, and what the results
will be used for before I take online quizzes.  I sure hope this isn't the
type of web site that leads me through 20 screens of quiz questions and only
then tells me that it'll cost me money to receive the results.

In SQL question #12, none of the answers are correct, but there is no choice
available for "none of the above".

There are two mistakes in that question:  none of the queries in the
multiple choice contain a FROM clause, so they can't query the Employee
table as described in the problem.  Also, none of the queries include the
CountryID or DepartmentID in the select-list.  So you can get the average
grouped per country or per department, but you won't know which country or
department corresponds to the given value.  Sorry to say so, but these
mistakes don't fill me with confidence that these tests are worth anyone's
time.

While I have been writing this response, my browser open to SQL question #12
timed out, and I get "Server Error in '/WebUI' Application." and additional
diagnostic information from your ASP runtime system.  I think you have some
more work to do!  <g>

Bill K.