The following basic principles for fault location in WDM systems are (). (Multiple Choice)

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

MG-SDH digital single core can be expanded by software upgrade.

In the non-aggregated OTU processing SDH standard signal scenario, both A and B are WDM stations, and the R_Los alarm is detected on the client side of the OTU of the A station. After the alarm is processed on the WDM side of the OTU, the client side of the downstream B station detects and reports the REM_SF alarm, and the B station transmits the signal to the downstream client device and reports the R_LOS alarm to the client device.

When creating new NE,which of the following Configuration Mode can be selected?