单项选择题
The ZXMP M900 is applicable to ultra long-haul transmission and the system reach can be up to （） at the maximum 。
A.640km
B.2000km
C.560km
D.800km
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相关考题
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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.
A.1
B.2
C.3
D.4 -
填空题
ZXWM M900密集波分复用光传输系统中采用的超长距放大技术包括大功率（）技术和（）放大器技术 -
判断题
ZXMP M600系统中OSC监控通道的传输极限为80km。
