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

1. For protection, which of the following is a double-ended switchover and requires an APS protocol?

A) ODUK ring network protection.
B) Customer side 1+1 protection.
C) VLAN SNCP protection.
D) SW SNCP protection.

2. The OptiX OSN 6800 subrack supports 7 sets of dual slots: IU1 and IU2, IU3 and IU4, IU5 and IU6, IU7 and IU8, IU11 and IU12, IU13 and IU14, IU15 and IU16. The configurable electrical layer service between the dual slots is the GE/Any/ODU1 signal. You do not need to configure an XCS board to schedule the electrical layer service in the dual slot.

A) True
B) False

3. Which of the following statements about the safe use of fiber is correct? (multiple choice)

A) The recommended dust cap is made of soft rubber material. It is not easy to absorb dust and debris, easy to clean, and has good dustproof effect.
B) For a board that can be equipped with an optical attenuator, it is recommended to add an optical attenuator to the receiving optical port.
C) When installing and maintaining the optical interface board and optical fiber, do not look into the optical interface or fiber connector.
D) When loopback testing the optical port with pigtails, in order to prevent the laser beam from being too powerful to damage the device, it is necessary to add a fixed optical attenuator.
E) Before using the optical adapter dedicated magnifier, the optical fiber should be inspected with an optical power meter to ensure that there is no laser beam in the fiber.

4. For the aggregation type OTU board, when the ODUk_PM_AIS alarm is received on the WDM side of the receiving OTU board, the following describes the OTN standard signal processing, which is correct.

A) No processing and reporting on this site
B) Generate SD events on the WDM side of the B station OTU, trigger channel service switching
C) Return OTUk_BDI alarm to the wavefront side of the upstream station
D) After the alarm processing on the client side, the ODUk_PM_AIS alarm can be detected in the client device.

5. Which of the following is the definition of "current alarm" on the network management?

A) Ended unconfirmed alarm
B) Unfinished or unacknowledged alarms
C) Unconfirmed alarm
D) Unfinished and confirmed alarms

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