题目内容

TreetopologyisusedinPONsystem,whichiscomprisedof______________,______________,______________.

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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.

Please give the full spelling of these terminology abbreviations in access network: TE, CPN, UNI, SNI.

In a typical TDM-PON, is the broadcast approach deployed in the downstream or upstream transmission?

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