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Huawei H12-931-ENU Exam Syllabus Topics:

Huawei Certified Internetwork Expert-Transmission Sample Questions:

1. Regarding the OTN system network-level protection switching test, is the following statement wrong? ()

A) By default, the power difference between the main and backup channels of the OLP protection group exceeds 3dB and reports an alarm, and the maximum can be set to 8dB;
B) In the OTN bearer SDH multiplex section ring networking scenario, in order to avoid simultaneous switching of OLP protection and MSP protection, the delay time can be set in the MSP protection group
C) ODUk-SNCP does not involve a switching protocol, so it can assure customers that the test switching time must be less than 50ms
D) OLP master and backup optical power abnormal threshold exceeds 5dB by default to perform switching, and the threshold range can be set from -5 to 5
E) ODUk-SNCP protection is superimposed on OLP protection. In order to avoid secondary switching of SNCP protection, the delay time can be set in the SNCP protection group

2. For WDM network, the following description is correct (multiple choice)

A) For the OAU board, the type of DGI module connected on site can be roughly judged based on the difference between the output of POUT and the input of BAIN
B) For an OAU board, you can roughly judge the type of DCM module connected to the site according to the upper threshold of nominal gain (dB) on the network management system and the upper threshold of actual gain (dB)
C) For 10G and 100G mixed transmission networks, you can use the performance of 10G to analyze the dispersion compensation of the system
D) For 10G and 100G mixed transmission networks, you can use the performance of 100G to analyze the dispersion compensation of the system

3. The non-linear effect of the coherent signal is stronger than that of the 10G non-coherent, so the single-wave entering fiber optical power should be reduced. Therefore, during system commissioning, the OA gain can be reduced to reduce the single-wave output optical power of the OA to meet the fiber-in optical power requirements.

A) TRUE
B) FALSE

4. Which of the following is correct for the FEC delay relationship ()

A) Typical value of AFEC delay of 40G coherent signal> Typical value of FEC delay
B) The sender increases the overhead for encoding, and the receiver performs decoding, which will bring signal delay.
C) 100GHFEC delay>40GAFEC delay
D) 100GSDFEC delay (20%)>100GHFEC delay (7%)

5. N3EGS2 supports which of the following protections?

A) TPS
B) DLAG
C) BPS
D) PPS

Solutions: