Testmoz is a simple service for creating and administering multiple choice tests online. Testmoz provides a unique url for the tests you create. Testmoz also provides a “pass code” that test takers have to enter. As the administrator of the tests you create you can quickly see who has taken your test and how many questions they answered correctly.
http://www.freetech4teachers.com/2010/10/testmoz-simple-tool-for-giving-tests.html