Thanks, Alfred, for explaining the uninitialized object question.  NullReferenceException was the answer I guessed but I wasn't sure at all.  Of course, the exam doesn't tell you what answers you got right or wrong so it was only after your explanation that I learned that I guessed correctly.  I actually overlooked that arrays and strings were objects.  I kept thinking this question referred to user-defined classes.  So your explanation helped greatly, thank you.

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Last night, I had my third dream about the webcast.  The first two were nightmares.  Last night's was more pleasant.  I wonder if this will be a nightly event...