(1) The answers of the applicant to any such examination shall be written by the applicant under the supervision of the division of insurance. Any such written examination may be supplemented by oral examination at the commissioner's discretion.

(2) The examination shall be given at such times and places within this state as the commissioner deems necessary to serve the convenience of both the commissioner and applicants.

(3) The commissioner may require a waiting period of reasonable duration before giving a new examination to an applicant who has failed to pass a previous similar examination.