Wireless telecommunications networks are generally implemented and administered using(90) communication.This implementation take

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问题 Wireless telecommunications networks are generally implemented and administered using(90) communication.This implementation takes place at the(91)level of OSI model network structure.
(91)

选项 A、physical
B、1ink
C、network
D、transport

答案A

解析 本题考查射频技术方面的基础知识。
无线电信网络一般使用射频交互来实现通信和管理。这个过程发生在OSI网络参考模型的物理层。
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