This test is to review only and should not be the only source of studing for certification.
Due to the comlexity of the air traffic control, it is imperative vehicle operators listen carefully and repeat all the instructions as they understand them. DAFBI11-251 CH3 3.2.2
Explanation
Vehicle operators have to contact the tower before they enter the CMA, while their in the CMA and when they leave the CMA.
The CMA is any portion of the airfield requiring aircraft, vehicles and pedestrian to obtain specific Air Traffic Control (ATC) approval for access. (DAFBI111-251 CH3 3.1.1.