(a) The answers of an examinee to an examination required under this chapter shall be made by the examinee in writing. A written examination may be supplemented by oral examination.
(b) The examination shall be given at times and places within the state as the commissioner considers necessary to reasonably serve the convenience of both the commissioner and examinees.

(c) The commissioner may require a waiting period of reasonable duration before an examinee who fails the examination, but who is otherwise qualified, may be reexamined.
(d) The scheduling and administration of examinations required under § 4102.057 shall be effected by persons approved by the commissioner.