With the current emphasis on credentialing in nursing, many nurses have committed to taking the CEN examination. The following questions have been developed to assist in the emergency nursing knowledge assessment and in preparation for the CEN examination. Questions, rationale for the correct answers, and references are provided here for your self-evaluation. ENA has developed educational materials that can be used as further resources for CEN preparation: Emergency Nursing Core Curriculum and CEN Review Manual. For further information on educational review materials, please contact the ENA Association Services Team at (800) 243-8362.