N.C. Gen. Stat. § 90-171.30

At least twice each year the Board shall give an examination, at the time and place it determines, to applicants for licensure to practice as a registered nurse or licensed practical nurse. The Board shall adopt rules, not inconsistent with this Article, governing qualifications of applicants, the conduct of applicants during the examination, and the conduct of the examination. The applicants shall be required to pass the examination required by the Board. The Board shall adopt rules which identify the criteria which must be met by an applicant in order to be issued a license. When the Board determines that an applicant has met those criteria, passed the required examination, submitted the required fee, and has demonstrated to the Board's satisfaction that he or she is mentally and physically competent to practice nursing, the Board shall issue a license to the applicant.