Transmission H31-311 Huawei Study Notes

Which of the following statements about the sequence of a signal flow between the SDH interface and the cross-connect unit is correct?

When bit errors are detected in the B2 byte, which of the following alarms is reported by the peer end?

Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.

Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?

1. The B2 byte indicates the transmission channel.

2. The Ml byte indicates the transmission channel.

3. MS-REI is transmitted from the sink to the source.

4. MS-REI is transmitted from the source to the sink.

5. Indicates the number of detected bit errors after the sink receives the MS signals.