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问题 #1

The capacity of a UPS is 100 kVA, and its output power factor is 0.8. Which of the following is the maximum active power and reactive power that the UPS can output under rated conditions?

A. 20 kW, 40 kVar

B. 40 kW, 60 kVar

C. 80 kW, 60 kVarcorrect

D. 100 kW, 80 kVar

正确答案：C

问题 #2

Which of the following is correct about the upward supply and downward return air supply method?

A. The air supply outlet is located at the upper part of the air-conditioned room, and the air return outlet is located at the lower part of the air-conditioned room.correct

B. None

正确答案：A

问题 #3

Huawei Monitoring System NetEco Supports the concept of user groups, and implements role-based user group management. A user group is a group of user-level collections with the same operation permissions, and different user groups have different permissions.

A. Truecorrect

B. False

正确答案：A

问题 #4

Which of the following is not a characteristic of a modular data center?

A. Faster deployment compared to traditional data centers

B. Easy to expand

C. Compared with traditional data centers, the requirements for deployment environment are highercorrect

D. Can be pre-integrated and pre-debugged at the factory

正确答案：C

问题 #5

Which of the following components is a fire detector that detects smoke particles?

A. Heat Detector

B. Pressure switch

C. Smoke detectorcorrect

D. Sound and light alarm

正确答案：C

问题 #6

Which of the following descriptions of Huawei's DC power supply are wrong?

A. When the mains power is normal, the rectifier module not only supplies power to the load, but also provides floating charge current for the battery.

B. When the mains power is off, the battery will power the device.

C. When the battery temperature is too low, increase the battery charging voltage.

D. When the mains power is normal and the real-time capacity of the lead-acid battery is lower than the set value, the battery switches from the equalizing charging mode to the floating charging mode.correct

正确答案：D

问题 #7

Which of the following statements about batteries is wrong?

A. The battery room must be protected from overheating and thermal runaway.

B. The battery expands because too much gas is released, causing the pressure to increase.

C. When the battery reaches the end of its service life, no special treatment is required and it can be sold directly for scrap recycling.correct

D. When the battery leaks, do not touch it directly with your hands.

正确答案：C

问题 #8

Which of the following belongs to air-cooled row-level air conditioner?

A. NETCOL5000-Acorrect

B. No other options

正确答案：A

问题 #9

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.correct

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 lower and the internal resistance is greater.

正确答案：B

问题 #10

Which of the following does not belong to the components of chilled water air conditioner?

A. Condensing agentcorrect

B. None

正确答案：A

问题 #11

At present, storage batteries are mainly installed in racks and cabinets in data centers.

A. Truecorrect

B. False

正确答案：A

问题 #12

Which of the following interfaces can both power the device and have communication functions?

A. RJ45

B. RJ12

C. FE

D. POEcorrect

正确答案：D

问题 #13

In the power supply and distribution system of the data center, if a power outage occurs, the backup switching between AC power and AC power or between AC power and diesel generator is generally completed by ().

A. Automatic transfer switch systemcorrect

B. Diesel generator system

C. Low voltage power distribution system

D. Rack power distribution system

正确答案：A

问题 #14

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 replacedcorrect

B. No other options

正确答案：A

问题 #15

When the AC power equipment is introduced in the three-phase four-wire system, in addition to the grounding of the near end of the power transformer, the near end of the electrical equipment and the equipment room should be grounded repeatedly on the neutral line.

A. Truecorrect

B. False

正确答案：A

问题 #16

Which of the following does not belong to the four major components of air conditioning?

A. Fan

B. Condenser

C. Compressor

D. Evaporator

正确答案：A

问题 #17

Which of the following functions can display the entry and exit records of data center personnel?

A. Configuration Management

B. Access Control Managementcorrect

C. Energy Efficiency Management

D. Work Order Management

正确答案：B

问题 #18

Which of the following are the characteristics of water-cooled chilled water air conditioners?

A. Cooling towers need to be installed, suitable for large and medium-sized data centerscorrect

B. No other options

正确答案：A

问题 #19

For valve-regulated lead-acid batteries, what are the functions of the safety valve?

A. Exhaust excess gas and prevent air from enteringcorrect

B. No other options

正确答案：A

问题 #20

Which of the following components does not belong to the smoke exhaust system in the fire protection system?

A. Pressurized blower

B. Smoke Exhaust

C. Air duct

D. Air sampling tubecorrect

正确答案：D

问题 #21

Which of the following models is Huawei's room-level water-cooled air conditioner?

A. NetCol8000-E220

B. NetCol5000-C065

C. NetCol5000-A042

D. NetCol8000-C070correct

正确答案：D

问题 #22

R410a refrigerant can cause greenhouse effect and destroy ozone layer

A. False

B. True

正确答案：A

问题 #23

The abbreviation for valve-regulated lead-acid battery is VRLA.

A. Truecorrect

B. False

正确答案：A

问题 #24

If the capacity of the UPS is 20KVA, the UPS front end input capacity may be () during normal operation.

A. 19KVA

B. 25KVA

C. 18KVA

D. 20KVA

正确答案：B

问题 #25

The humidifier used in Huawei's row-level precision air conditioner is an infrared humidifier.

A. True

B. Falsecorrect

正确答案：B

问题 #26

Which of the following are the advantages of UPS 2N system?

A. Power supply redundancy, the UPS system can be maintained without switching the load to maintenance bypass mode, and there is no single path failure pointcorrect

B. The hardware configuration cost is low, and the UPS works under the designed high load conditions with the highest efficiency and higher reliability than the mains.

正确答案：A

问题 #27

Which of the following parameters can reflect the energy efficiency status and energy efficiency of a data center?

A. ROI

B. PUEcorrect

C. MTTF

D. SPC

正确答案：B

问题 #28

CLF Defined as the power consumption of data center cooling equipment and IT The ratio of the power consumption of the device.

A. False

B. True

正确答案：B

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