@Doug Harrison Sometimes the questions are phrased weirdly, but truly not that bad if you have a couple years experience under your belt. NS provides a study guide and sample test. If you feel pretty confident on the study guide topics and the sample test you'll be fine. Not sure what the passing mark is, but you definitely don't need to get every single thing right. Plus, you can usually get a free or discounted retake if you do end up failing.