Which of the following alarms will be reported by the peer end when it is detected that the error code exceeds the limit in the B2 byte?
Which of the following conditions will cause multiple channels to report BEFFEC-EXC alarms at the same time?
Which of the following items can be included in the upgradeable boards of the PTN3900 NE upgrade operation?
Regarding the function of backing up and restoring all data in the network management database, which of the following statements is correct?
Which of the following conditions can cause the board to insert the BDI maintenance signal back to the upstream site?
Which of the following descriptions about the PTN network deployment ring network intersecting ring are correct?
Which of the following are the basic requirements of the DWDM system for the light source?
The pump laser is the energy source of the EDFA, and its function is to provide energy for the amplification of the optical signal. Which of the following wavelengths can be used as the output wavelength of the
pump source in the EDFA structure?
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