Free Huawei H31-331 Exam Dumps Questions & Answers

Which of the following is about the functional characteristics and dependency limitations of IPA, and which description is correct?

• A.In the ASON network, the IPA should adopt the station-by-station configuration mode, and the auxiliary detection board can be omitted.
• B.OADM sites or electrical relay sites can be configured between two IPA pairs
• C.When configuring the IPA pair, you must ensure that the signal flow direction of the test board and the auxiliary test board are the same.
• D.IPA can be configured separately on the sender or receiver

Standard FEC, AFEC, and HFEC techniques all increase FEC overhead, and the resulting coding gain is incrementally increased.

• A.True
• B.False

Regarding the configuration of the electrical layer service, which of the following statements is wrong.

• A.In the case of the OCh service path, you can search for the OTUK path, create the ODUk service layer path, and create the client path.
• B.After the logical fiber connection is completed, the path search operation is not required, and the OTS path and the OMS path can be automatically generated.
• C.In the case where the OCh service path exists, the client path is created directly, and the NMS can automatically create the OTUk and ODUk paths.
• D.In the case where the OCh service path exists, the ODUk path is directly created, and the network management can automatically create the OTUk path.

What are the correct statements about the system's 24-hour error-free loopback performance test? (multiple choice)

• A.The test time is generally set to 24 hours. The test generally requires the system commissioning to be completed. At this time, the optical power per channel should be the optimal value.
• B.The number of channel cascading does not exceed 16, and the channel bearer service type may be different.
• C.The test is also done for each channel, we can use multiple channels in series to test.
• D.It is not necessary to add a fixed optical attenuator when the optical port is self-looping.

What are the optical layer paths in the path hierarchy of the WDM network? (multiple choice)

• A.OMS
• B.OTU
• C.OCh
• D.OTS