A registered nurse (RN) is a professional who has completed the necessary education requirements, such as an Associate Degree in Nursing (ADN) or nursing diploma program, and passed the NCLEX-RN exam for licensure. A nurse with a Bachelor of Science in Nursing (BSN) is an RN who has completed a bachelor’s degree program, which typically takes four years. Nurses who start their career with a diploma or an ADN can continue their education with a Bachelor of Science in Nursing (RN-BSN) Completion Program or may decide to advance their education by enrolling in an RN to MSN program. Both of these degree program options are offered by Walden University.