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() switching was invented in the late 1960s for data communications.
A．Frame B．Link C．Packet D．Line
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单选题Ten o’clock is a very late hour for a boy of his age to stay up.A
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单选题Although Allen popularized the use of angst- ridden monologue in film, the device was not invented by him.A
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Fast switching reducesa routers CPU utilization， compared to process switchingB
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Even though the fast switching is enabled， the first packet of a flow is still process switched
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