HAAD exam

One of the requirements in able to work as a NURSE abroad in UAE like in Qatar, Dubai etc. you need to take and pass the HAAD exam. You can take it in Makati and Baguio. Most of the nurses want to take it in able to be qualified for the work they are applying for. But the problem most of us esp. the first timer doesnt know what type, sample of question they are giving and on what medical area they are focusing their question. For those who took it and successfully passed it, can you kindly give us an idea regarding the exam. Thank you so much.