Huawei Certified Network Professional-Building Carrier OTN Transmission Network 認定 H31-331 試験問題:

1. When there is no optical path intercommunication between two or more network elements, the Ethernet port of the network element can be used to implement extended ECC communication. The NE defaults to automatically extend ECC communication. When the number of Huawei device NEs using extended ECC communication is greater than four, manual ECC communication must be used.

A) True
B) False

2. Regarding POWER_FAIL, which of the following statements is wrong?

A) If the alarm is reported on the board that is not the main control board, the main power supply in the board is invalid and the backup power supply is normal. This will cause the active/standby power supply to be switched without affecting services.
B) If the alarm is reported on the board of the non-master board, the main power supply in the board fails and the backup power fails. This will cause service interruption.
C) If the alarm is reported on the main control board, the system time will be lost after power failure, and the network data will be lost within 30 minutes.
D) If the alarm is reported on the PIU board, it indicates that the subrack input power supply voltage is abnormal and the power supply power module is faulty.

3. The NMS does not support automatic synchronization between the NE and the NMS. You must manually synchronize the NE and NMS time.

A) True
B) False

4. In the WDM network, if the two-way OA and OSC report the optical loss alarm, which is the most likely cause?

A) Line fiber unidirectional degradation
B) Line fiber one-way interruption
C) Line fiber bidirectional interrupt
D) Line fiber bidirectional degradation

5. When the optical cable between the FIU and the FIU fails, what are the optical layer alarms reported by the downstream site? (multiple choice)

A) OSC_LOS
B) R_LOS
C) OSC_RDI
D) MUT_LOS

質問と回答：