Hi,
I just failed this exam yesterday, my advice is that lisenet link is very usefull, perhaps I failed because i never execute it entirely (like try to do all the questions in lees that 4 hours), first of all you need to be able to respond every question without troubleshoot every step, if you are not capable of this, you will lose a lot of time, I failed because i forgot how to condition some taks (like how the " ' and {} and in wich order you need to use it in the conditional)
My advice is execute the questions of said link over and over until you are able to build every playbook with minor mistakes, go deep into jinja templates (for, if-else and the use of them in conditionals), you will use that a lot, practice how to call variables, which type of them they are, how to parse them and last but not least special variables and facts are also key; practice for the rhel-roles and galaxy roles, be aware that without internet connection you will not call the modules from ansible galaxy or github.
If you practice with the lisenet example you will do fine, I failed with 167 points so is not pretty bad, ansible-docs are available to review some modules, so dont waste memory learning every single possible part of a module.
Hope I helped you!
