H12-411_V2.0-ENU exam

Which of the following descriptions of lithium-ion battery separator is wrong?A . Allow lithium ions to pass through.B . Allow electrons to pass through.C . Contains micropores that can absorb electrolyte.D . The thicker the isolation film, the better its strength and safety, but the battery cell energy density is...

Which of the following parameters can reflect the energy efficiency status and energy efficiency of a data center?A . ROIB . PUEC . MTTFD . SPCView AnswerAnswer: B

When electrolyte leakage occurs in the battery, () treatment method is more appropriate.A . Wear gloves and wipe it clean with a rag, and check whether it needs to be replacedB . No other optionsView AnswerAnswer: A

MCB circuit breakers can be divided into B, C, D, Z, and K levels according to different tripping characteristics. Which level of tripping characteristics should be used for IT loads?A . B levelB . C-levelC . D levelD . Z levelView AnswerAnswer: B

() reflects the dryness of the air. The smaller the value, the drier the air.A . Moisture contentB . Wet bulb temperatureC . Relative humidityD . Dry bulb temperatureView AnswerAnswer: C

In Huawei DC power supply, which of the following is the meaning of BLVD?A . Battery low voltage power downB . Load low voltage power offC . Battery charge at low temperatureD . Power off due to mains undervoltageView AnswerAnswer: A

When the mains input range is voltage: 150-260VAC, frequency: 45-60Hz, what is the working range of UPS?A . 110-280V, 40-70HZB . 180-280V, 50-90HZC . 120-360V, 50-70HZView AnswerAnswer: A

Which of the following is the maximum communication distance of RS485 communication method?A . 5 mB . 100 mC . 15 mD . 1200 mView AnswerAnswer: D

What is the maximum data transmission rate supported by FE (Fast Ethernet)?A . 100KB . 10 MC . 1000 MD . 100 MView AnswerAnswer: D

The gas fire extinguishing system consists of ()A . Fire extinguisher storage bottle set, starting device, fire pipe network, sprinklerB . No other optionsView AnswerAnswer: A