>>There were some questions that threw me for a loop and others that required some thought. I won't be surprised if I missed some easy ones too. Looking back on it, I'd say I didn't pass 155 and 156 is a toss up.
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>Well, I thought I did pretty well on 156, until I verified some of my answers this morning. :)

It's the "test effect". You think something looks right at the time, and then later on - when you're under less pressure - you think back on it and... D'Oh! For my part, I wish I could edit a couple of the brilliant and perceptive comments I submitted, after I woke up with a flash of insight around 3 a.m. the night after the exam and realized that I had read the question wrong.