Which of the following options can reduce the effects of nonlinear effects in the WDM system? (Multiple Choice)

Which of the following plane technologies does the OS-OTN device incorporate? (Multiple Choice)

When creating an electric layer path, one RX/TX port can only establish a connection with one optical channel of the clientLP port.

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 is the data that needs to be collected and saved in the event of a failure? (Multiple Choice)