Alright, I've put it off long enough, I'm about to try for my CCNA next month. I'm pretty good at subnetting, but I want to know just how good. Is there anywhere out there that has some practice subnetting questions that either time you or actually tell you how long each question should take to answer in order to have a passing chance with the CCNA? There's plenty of examples in my books, but those obviously aren't timed, and I have no idea if I'm completing them fast enough.
Thanks in advance.