For nurses, the DHA Registered Nurse exam (code RNT0312) is a 150-question computer-based test lasting three hours, with a 50% pass mark. PrometricDr’s nursing practice tests mirror this format, so you become familiar with the pacing, question style, and clinical scenarios you will face on exam day. Practicing under realistic conditions is one of the most reliable ways topass DHA Prometric on your first attempt.