; (2) the registration and marking of unmanned aircraft; (3) the standards for remotely identifying owners and operators of unmanned aircraft systems and associated unmanned aircraft; and (4) other standards consistent with maintaining the safety and security of the National Airspace System. (g) Aeronautical knowledge and safety test (1) In general Not later than 180 days after the date of enactment of this section, the Administrator, in consultation with manufacturers of unmanned aircraft systems, other industry stakeholders, and community-based aviation organizations, shall develop an aeronautical knowledge and safety test that can be administered electronically. (2) Requirements The Administrator shall ensure the aeronautical knowledge and safety test is designed to adequately demonstrate an operator’s— (A) understanding of aeronautical safety knowledge