Prometric is an online test administrator that provides practice materials and tests, according to its website, and the CNA is the state-issued exam required to become a certified nursing assistant. The content of these two-part exams vary from state to state, according to Study.com.
Each CNA exam consists of written and clinical skills sections. Each section is designed to test candidates' knowledge of current best practices, techniques and safety procedures. Successful test-takers are considered qualified to provide basic patient care in their state of residence, states Study.com.
The written portion of the CNA exam generally consists of a combination of multiple choice and reading comprehension questions, Study.com reports. These questions are designed to test applicants' knowledge in subjects such as hygiene, nutrition, infection control and workplace conduct. The test also encompasses patient/client rights and questions about ethical behavior.
The clinical skills section of the exam is hands-on and requires applicants to demonstrate position-related skills that are used in the field, such as taking and recording patient blood pressure; feeding, bathing and dressing a patient; assisting a patient with a bedpan; helping with range-of-motion exercises or providing catheter care. Candidates are also tested on proper hand-washing techniques during the clinical skills portion of the exam, according to Study.com.