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腹痛多为活动后绞痛的是
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In the function model of access network defined in ITU-T G.982, there are five successive building blocks in the user data plane, which are______________, ______________, ______________, ______________, ________________.
TreetopologyisusedinPONsystem,whichiscomprisedof______________,______________,______________.
In SDN, there are two planes: ______________plane is responsible for processing and delivery of packets with local forwarding state；______________plane is responsible for computing the state in routers (forwarding state).
In software defined networking, there is the physical separation of the network _______ plane from the _______ plane, and where a control plane controls several devices.
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