H12-411_V2.0-ENU V1

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

Which of the following is not a characteristic of a modular data center?A . Faster deployment compared to traditional data centersB . Easy to expandC . Compared with traditional data centers, the requirements for deployment environment are higherD . Can be pre-integrated and pre-debugged at the factoryView AnswerAnswer: C

Which of the following is the active material of the negative electrode of a VRLA battery?A . Lead sulfateB . Lead DioxideC . LeadD . Lead sulfideView AnswerAnswer: C