Which particles can be cross-scheduled for the cross-board of the OSN 8800 device? (Multiple choice)

Which of the following device types support the master-slave sub-architecture mode? (Multiple Choice)

When performing fiber synchronization, the network element does not create a fiber. What does it indicate?

For the wavelength division system, configure the 1st-20th wave, use the NS4 single board, and test the M40 output port with the spectrum analyzer during the commissioning. It is found that the optical power of the 20th wave is significantly lower than the other 19 waves. The possible reasons are as follows: (Multiple Choice)

Which of the following ROADM boards have WSS optical modules? (Multiple Choice)