What system should a command use for ordering advancement exams?

The system that a command should use for ordering advancement exams is the Advancement Exam Request System. This system is specifically designed to handle the logistics of ordering and managing advancement exams for Navy personnel.

The Advancement Exam Request System provides a streamlined process for commands to request and manage the necessary materials associated with advancement exams. It ensures that commands receive the correct quantity of exams and that they are distributed in a timely manner.

On the other hand, the Fleet Training Management and Planning system focuses on training management and scheduling, which is separate from the specific needs of managing advancement exams. The Training and Readiness Management Tool deals with tracking training requirements and readiness levels, and the Personnel Exchange Program is centered around personnel assignments and exchanges, which does not pertain to the ordering of exams.

Therefore, the correct option is the Advancement Exam Request System, as it is directly aligned with the process of obtaining and managing advancement exams for Navy personnel.