Most exams consist of sixty-five (65) multiple choice questions, and must be completed in seventy-five (75) minutes. Other exams consist of thirty (30) multiple choice questions, and must be completed in forty-five (45) minutes. A minimum score of 80 percent is required to pass a certification exam, unless otherwise published. Individuals who achieve the passing score will receive a certificate from HDI acknowledging their accomplishment and a credentialing logo that may be added to signature blocks and business cards.