单项选择题 In a ZXMP M800 system using 100M monitoring, the order-wire and protection switching commands are delivered to related network elements of multicast groups. Each system has a maximum of （）multicast groups.

判断题 隔离度表征合分波器本身对其各复用光通路信号的彼此隔离程度。

判断题 当光功率以瓦特为单位计算时，EDFA的总输出功率是各复用光通路输出功率的代数和。但当光功率以dBm为单位计算时，EDFA的总输出功率并非是各复用光通路输出功率的代数和。