Daily equipment maintenance items, excluding:

Which of the following is approximately equal to 100mw?

In the Colored&Directioned scenario of the 4D ROADM, if you want to implement local service scheduling in four directions, how many sets of M40V+D40 are needed?

The transmission plane mainly performs functions such as optical signal transmission, configuration protection switching, and reconnection, and ensures the reliability of the transmitted optical signal. However, the switching action of the transport layer is performed under the influence of the management dry surface and the control plane.

Which of the following methods does the networking and application of NG WDM include? (Multiple choice)