A.資源平面棧協(xié)議, B.移動平面棧協(xié), C.用戶平面棧協(xié)議, D.管理平面棧協(xié)議.
A.EPS, B.RR, C.MM, D.EPM.
A.1ms, B.2ms, C.10ms, D.20ms.