ABluetoothdevicecanbeeitheramasteroraslaveandanyofthedeviceswithina()canbethemaster.Thereisonlyonemasterandtherecanbeupto(请作答此空)activeslavedevicesatatimewithinasinglenetwork.Inaddition,adevicemaybeastandbyslaveoraparkedslave.Therecanbeupto()parkedslaves.Iftherearealreadymaximumnumberofactiveslaves,thenaparkedslavemustwaituntiloneoftheactiveslavesswitchesto()modebeforeitcanbecomeactive.Withinanetwork,all()communicationsareprohibited.
A.7 B.15 C.63 D.255正确答案A
