I passed the exam on March 2015. To pass the exam you need to know deeply the solution expecially the Designer (working experience is mandatory, a good training is suggested ).
Have a look at this : https://mylearn.emc.com/_certification/exam_description_xCP2xApplicationDevelopment.pdf
Thank you Leo for your reply.
Another question: how relevant is the practice test from mylearn.emc.com? Are there similar questions at the test?
some questions are similar but some questions or topics are not part of the test.
I also would like to suggest you to perform the xcp tutorial, it can be very helpfull a deep understanding of it.
The exam is not based on xCP 2.2 so do the old versions of the tutorial.
Same for xCP Designer, use the old one during preparation.