I did better in terms of score on 293 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. 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. I used Microsoft training kit and ucertify product for preparing and i can say its good enough.