Nobody is allowed to share any content of the actual exam.
The best preparation for the exam is following the QlikView Designer and Developer training (as both fields are questioned during the Developer certification). Next to that, get a few weeks of hands-on experience.
Doing the Skill Assessment might help you get an idea about gaps in your knowledge and give you an idea how the questions will be asked:
Thank you for posting in the Education Services forum. In addition to taking the Qlik Skills Assessment, I would recommend you visit the following links