Danb cda practice test review the certified dental assistant job is a career where opportunities are growing dentists increasingly turn routine work over to cdas and are thus able to focus on more complex tasks. The actual exam consists of three sections general chairside assistance infection control and dental radiography with a total of 320 multiple choice questions total exam time is limited to four hours for complete study check out our 750 question practice exam kit for the certified dental assistant exam. Our danb certified dental assistant practice exam sample questions and answers will test your understanding of subjects taught in an accredited cda course the dental field is growing and as a result provides plenty of job opportunities for those entering the trade if youre interested in becoming a dental hygienist dental assistant . The dental assisting national board inc danb has developed an examination referred to as the cda exam or certified dental assistant exam this examination has three components general chairside assisting gc radiation health and safety rhs and infection control ice