Most of the posts about failing the CCNA test complain about the simulations. In general, can a student count on just having one simulation per test or are there more. Is the simulation an all or none question (you receive x number of points or none at all)? Is it possible to pass without completing the simulation successfully? It seems that most recently candidates have been seeing simulations about nat/pat which would assume an understanding of subnetting, access lists, etc. Also, the switching simulations could be difficult as well. Thanks for your help.