2. 计算机
  3. A Bluetooth device can be either a master or a slave and any of the devices within a (71)____ can be the master. There is onl

A Bluetooth device can be either a master or a slave and any of the devices within a (71)____ can be the master. There is onl

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问题 A Bluetooth device can be either a master or a slave and any of the devices within a  (71)____   can be the master. There is only one master and there can be up to  (72)____   active slave devices at a time within a single network. In addition, a device may be a standby slave or a parked slave. There can be up to  (73)______   parked slaves. If there are already maximum number of active slaves, then a parked slave must wait until one of the active slaves switches to  (74)_____   mode before it can become active. Within a network, all  (75)____   communications are prohibited.
(73)____
A．127
B．255
C．511
D．1023
选项 A、 
B、 
C、 
D、 
答案B
解析
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