(a) The rules shall provide for open competitive recruitment to test the relative fitness of applicants for positions in the classified service. Such recruitment shall be announced publicly at least 7 days prior to the date for filing applications therefore and may be advertised through the press, radio and other media.
(b) The Secretary shall maintain a listing of those positions in the classified service that require the administration of a competitive examination. Examinations may be written or oral, or a combination of both, or they may be unassembled examinations, in which case the examining authority may evaluate specialized training and experience. Examinations shall be prepared by the Secretary, after consultation with the appointing authority where appropriate.