试题内容
同步数字系列(SDH)是光纤信道复用标准,其中最常用的STM-1(OC-3)据速率是 (1) ,STM-4(OC-12)的数据速率是 (2) 。
(1)A、155.520Mb/s
B、622.080Mb/s
C、2488.320Mb/s
D、10Gb/s
(2)A、155.520Mb/s
B、622.080Mb/s
C、2488.320Mb/s
D、10Gb/s
软题库参考答案:A、B(仅供参考)
软题库解析:正在加载....
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