ATM(Asynchronous Transfer Mode)technology combines connection oriented mechanism and( ) mechanism.

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问题 ATM(Asynchronous Transfer Mode)technology combines connection oriented mechanism and(    ) mechanism.

选项 A、circuit switching
B、packet switching
C、message switching
D、voice switching

答案B

解析 ATM(异步传输模式)技术结合了面向连接的机制和(    )机制。
A.电路切换    B.包切换    C.消息切换    D.语音切换
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