I did better in terms of score on this one than 291, but I found it much
harder. Wordings of questions are difficult like the rest, but the
DNS and CA scenarios were very tough to figure out. Take your time on the
questions. I used uecrtify exam simulation. Make sure you know exactly
what they are asking for and
think it through. You will not pass unless you have experience with the
product and have done a lot of prep work. Read the deployment guides
for PKI and DNS before writing. Do not take it lightly.