Updated H12-411_V2.0-ENU Exam Questions – Latest Study Materials for HCIA-Data Center Facility V2.0 Exam Preparation

Get the updated H12-411_V2.0-ENU exam questions as your latest study materials for the HCIA-Data Center Facility V2.0 exam preparation. We at HCDAtest have updated the H12-411_V2.0-ENU practice test with real questions and answers to ensure you can prepare well for your exam.

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1. In Huawei DC power supply, which of the following is the meaning of BLVD?

Battery low voltage power down

Load low voltage power off

Battery charge at low temperature

Power off due to mains undervoltage

Question 1 of 33

2. Which of the following is the temperature of the cold channel air inlet area of the data center specified in GB50174-2017?

11℃~19℃

13℃~22℃

18℃~27℃

20℃~35℃

Question 2 of 33

3. What is the English abbreviation for sealed valve-regulated lead-acid battery?

VRLA

GEL

AGM

GFW

Question 3 of 33

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

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.

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

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

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.

Question 4 of 33

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

Faster deployment compared to traditional data centers

Easy to expand

Compared with traditional data centers, the requirements for deployment environment are higher

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

Question 5 of 33

6. Which of the following is the active material of the negative electrode of a VRLA battery?

Lead sulfate

Lead Dioxide

Lead

Lead sulfide

Question 6 of 33

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

Pressurized blower

Smoke Exhaust

Air duct

Air sampling tube

Question 7 of 33

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

Heat Detector

Pressure switch

Smoke detector

Sound and light alarm

Question 8 of 33

9. Which of the following descriptions about data center monitoring systems is wrong?

Can monitor power system, environmental system, fire protection system, etc.

Remote monitoring is not supported

Can provide multiple alarm methods such as voice and short message

Intelligent monitoring system can improve management efficiency

Question 9 of 33

10. Which of the following statements about condensers is wrong?

Under normal circumstances, the inlet temperature of the condenser in an air-cooled direct expansion air conditioner is higher than the outdoor temperature.

Condensers can be divided into air-cooled condensers and water-cooled condensers.

Condensation water will be generated when indoor air passes through the surface of the condenser.

The condenser of an air-cooled direct expansion air conditioner is generally installed outdoors.

Question 10 of 33

11. What is the maximum data transmission rate supported by FE (Fast Ethernet)?

100K

10 M

1000 M

100 M

Question 11 of 33

12. Which of the following statements about UPS rectifiers is wrong?

With boost function

can convert direct current into alternating current

Can reduce UPS pollution to the power grid

Can realize power factor correction

Question 12 of 33

13. In a circuit with resistance and capacitance, if the frequency of the current increases from 50 Hz to 100 Hz, how will the impedance of the circuit change?

Increase

Reduce

No change

Uncertain

Question 13 of 33

14. 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 ().

Automatic transfer switch system

Diesel generator system

Low voltage power distribution system

Rack power distribution system

Question 14 of 33

15. In an air conditioning system, which of the following uses water cooling or air cooling to cool the high-temperature and high-pressure gas discharged from the compressor and release the heat to the outside?

Evaporator

Condenser

Compressor

Expansion valve

Question 15 of 33

16. Which of the following does not belong to the integrated wiring system?

Raised Floor

Fiber Optic

Cable Tray

Patch Panel

Question 16 of 33

17. Which of the following statements about battery packs in UPS systems is wrong?

When the AC power input is normal, the AC power will charge the battery pack.

Batteries are an important part of data center infrastructure and can provide power to back-end loads in the event of a utility power outage.

If the UPS input voltage and frequency are wide, the battery life can be extended.

When the inverter fails, the battery pack can still supply power to the rear-end load.

Question 17 of 33

18. 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?

B level

C level

D level

Z level

Question 18 of 33

19. According to Heinrich 's Law, in a machinery accident, which of the following is the proportion of casualties (serious injuries or deaths), minor injuries, and unsafe behaviors?

1:10:100

1:50:200

1:35:400

1:29:300

Question 19 of 33

20. Which of the following parameters represent the pollution of UPS to the power grid?

Output power factor

Input current harmonics

Overload capacity

Efficiency

Question 20 of 33

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

ROI

PUE

MTTF

SPC

Question 21 of 33

22. Which of the following descriptions of lithium-ion battery separator is wrong?

Allow lithium ions to pass through.

Allow electrons to pass through.

Contains micropores that can absorb electrolyte.

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.

Question 22 of 33

23. When the mains input range is voltage: 150-260VAC, frequency: 45-60Hz, what is the working range of UPS?

110-280V, 40-70HZ

180-280V, 50-90HZ

120-360V, 50-70HZ

Question 23 of 33

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

Cooling towers need to be installed, suitable for large and medium-sized data centers

No other options

Question 24 of 33

25. Which of the following outdoor unit models has a dual fan?

NETCOL500-A072

No other options

Question 25 of 33

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

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

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.

Question 26 of 33

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

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.

None

Question 27 of 33

28. () reflects the dryness of the air. The smaller the value, the drier the air.

Moisture content

Wet bulb temperature

Relative humidity

Dry bulb temperature

Question 28 of 33

29. In the UPS system, which of the following is the most comprehensive description of the role of the inverter circuit?

Convert the DC voltage or battery voltage after AC rectification into AC voltage

No other options

Question 29 of 33

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

Configuration Management

Access Control Management

Energy Efficiency Management

Work Order Management

Question 30 of 33

31. Which of the following devices can be used to store video recordings for a long time?

UPS

NVR

AC Actuator

Switch

Question 31 of 33

32. If the capacity of UPS is 20KVA, then in normal operation, the UPS front-end input capacity may be ()

25KVA

30KVA

28KVA

Question 32 of 33

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

NetCol8000-E220

NetCol5000-C065

NetCol5000-A042

NetCol8000-C070

Question 33 of 33

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Updated H12-411_V2.0-ENU Exam Questions – Latest Study Materials for HCIA-Data Center Facility V2.0 Exam Preparation

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