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SDH的概念最早由美国贝尔通信研究所提出，称为SONET（同步光网络）。
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更多 “SDH的概念最早由美国贝尔通信研究所提出，称为SONET（同步光网络）。 ” 相关考题
考题
关于MSTP的说法，哪个是错误的：（）A、华为最早提出RPR的概念B、2000年北展华为首次推出MSTP的概念C、华为最早出现ATM OVER SDH规模商用D、华为最早推出IP OVER SDH
考题
On an ONS 15454 node you can tunnel a（n） （）.A、 SDH circuit over a SONET network delivering it as an SDH signalB、 SDH circuit over a SONET network delivering it as a SONET signalC、 SONET circuit over an SDH network delivering it as an SDH signalD、 SONET circuit over an SDH network delivering it as a SONET signal
考题
POS（PacketOverSONET/SDH，SONET/SDH上的分组）将长度固定的数据包直接映射进SONET同步载荷中，使用SONET物理层传输标准，提供了一种高速、可靠、点到点的数据连接。
考题
On an ONS 15454 node you can tunnel an （）.A、SDH circuit over a SONET network delivering it as an SDH signalB、SDH circuit over a SONET network delivering it as a SONET signalC、SONET circuit over an SDH network delivering it as an SDH signalD、SONET circuit over an SDH network delivering it as a SONET signal
考题
单选题On an ONS 15454 node you can tunnel a（n） （）.A
SDH circuit over a SONET network delivering it as an SDH signalB
SDH circuit over a SONET network delivering it as a SONET signalC
SONET circuit over an SDH network delivering it as an SDH signalD
SONET circuit over an SDH network delivering it as a SONET signal
考题
单选题On an ONS 15454 node you can tunnel an （）.A
SDH circuit over a SONET network delivering it as an SDH signalB
SDH circuit over a SONET network delivering it as a SONET signalC
SONET circuit over an SDH network delivering it as an SDH signalD
SONET circuit over an SDH network delivering it as a SONET signal
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