anyone attempted CBE before.May I know if I am unsure of a question,can i skip it then later come back again to attempt? Before i finished the whole exam,will it prompt me that I still have a question not answered?

Yes, you can skip a question and go back to it later. When you skip a question, they warn you that you have not yet answered this question through a dialog box. There would be a list of the questions on the left side and those which are unanswered would be marked with an asterick(*) sign. This sign will make u be able to identify the unanswered questions. Before you begin your exam there would be a set of instructions given in the CBE, which will help you understand the basics of a CBE.

Hope it helps....