Scrum.org Open Assessments
Today I discovered the Open Assessments page at scrum.org, a free test of your understanding of scrum in the form of a set of timed multiple choice questions.
I found you need to be careful when taking the assessments to read the questions fully and not to just jump at the first answer that springs to mind.
For anyone doubting I could even spell my name correctly, I managed to pass the Scrum Open assessment :)