I did the labs/exercises continuously for 2 weeks and ran multiple different scenarios in my own home lab to ensure I understood the gist of each troubleshooting technique taught in the course. I have years of experience, and this is probably one of the most difficult exams I ever sat. My suggestion to anybody sitting this exam is, keep rebooting the systems as much you can, exercises are somewhat related to each other, and if you fail to ensure one was persistent, there will be a domino effect that make you fail on other exercises too....
