Which factors determine the optical signal-to-noise ratio (OSNR) of the receiving end to a certain extent After the signal transmission in the WOM system is transmitted over a certain distance, the "oSNR" of the receiving end of the optical signal-to-noise ratio is reduced to a certain extent. Which of the following is the main cause?
Which of the following maintenance signals is transmitted from the downstream site to the upstream site of the OTN?
Which of the following statements regarding the protection of the cross-connecting plate 1+1 is correct? (Multiple choice).
QinQ technology can be used when multiple users need to share the same VCTRUK and use the same VLAN ID.