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)
The overhead ratio is a factor that affects the error correction capability of FEC technology. Generally, under the same FEC encoding/decoding algorithm, the higher the overhead ratio, the greater the net coding benefit.
The packet protection features supported by the OSN 1800V include _______. (Multiple choice)
After the PWE3 service is successfully deployed, what is the deployment status of the PWE3 service displayed?
Which of the following is a part of the optical layer in the OTN frame structure? (Multiple Choice)
