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H12-411_V2.0 Sample Questions Answers

Questions 4

In the air-conditioning system, the function of the ____________ is to use water cooling or air cooling to cool the high-temperature and high-pressure gas discharged from the compressor and release heat to the outside world.

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Questions 5

The function of Huawei's chilled water air conditioner plug-in frame power supply is to provide a stable power supply for the fans.

Options:

A.

True

B.

False

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Questions 6

____________ is a fire detector that detects smoke particles.

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Questions 7

During the construction process, the operation with debris splashing should be used ____________ .

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Questions 8

The principle of the evaporator is to convert the refrigerant from liquid to gas, take away the heat of the refrigerated object, and realize refrigeration.

Options:

A.

True

B.

False

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Questions 9

The following air conditioners are comfortable air conditioners ____________ .

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Questions 10

At a certain atmospheric pressure and water vapor content, the air is cooled down. When the air reaches saturation, it will continue to cool down. The temperature at the time of condensation is ____________ .

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Questions 11

ACB The actual work of the circuit breaker can reach several thousand amperes, and at the same time, it requires high segmentation capability and thermal stability. ____________

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Questions 12

In the data center power supply and distribution system, if a power outage occurs, it is generally caused by Complete the standby switch between mains and mains or mains and diesel generators.

Options:

A.

Automatic transfer switch system

B.

Diesel generator system

C.

Low-voltage power distribution system

D.

Rack power distribution system

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Questions 13

The parameters that can reflect the energy efficiency and energy use efficiency of the data center are ____________ .

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Questions 14

Data centers usually use gas fire protection systems.

Options:

A.

True

B.

False

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Questions 15

Through the query ____________, the user can understand the operation of the device.

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Questions 16

The gas fire extinguishing system consists of ____________ .

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Questions 17

Parameter representation upsPollution to the power grid.

Options:

A.

Output power factor

B.

Input current harmonics

C.

Overload capacity

D.

efficient

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Questions 18

When the sunroof actuator senses a smoke alarm, it cannot control the turning sunroof to open automatically.

Options:

A.

True

B.

False

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Questions 19

____________ Support creating report tasks according to report templates.

Options:

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Questions 20

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.

Options:

A.

True

B.

False

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Questions 21

Reflects the dryness of the air, the smaller the value, the drier the air.

Options:

A.

Moisture content

B.

Wet bulb temperature

C.

Relative humidity

D.

Dry bulb temperature

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Questions 22

During the battery installation process, the maintenance channel of the high-voltage battery pack used should be insulated.

Options:

A.

True

B.

False

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Questions 23

For unsaturated air, dry bulb temperature, wet bulb temperature, A The relationship between point temperature is ____________ .

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Questions 24

According to the degree of equipment concentration, the air conditioning system can be divided into ____________ .

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Questions 25

When the battery electrolyte leaks, ____________ treatment is more appropriate.

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Questions 26

There are generally two types of variable air volume ventilated floors, one is through an adjustable air valve, and the other is a dedicated ventilated floor plus adjustable fans.

Options:

A.

True

B.

False

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Questions 27

PUE The closer the value ____________, indicating that the energy efficiency status of the data center is good.

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Questions 28

Lay anti-static floor, wear anti-static shoes and socks to prevent it from forming ____________ .

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Questions 29

The following is for high frequency ups The correct description of the rectifier components is.

Options:

A.

Complete AC to DC conversion

B.

Complete DC to AC conversion

C.

Realize power factor correction and pressure reduction function

D.

Realize power factor correction and boost function

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Questions 30

UPS The inverter component can realize the conversion from AC to DC.

Options:

A.

True

B.

False

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Questions 31

The following air conditioners do not need to install cooling towers.

Options:

A.

Air-cooled direct expansion air conditioner

B.

Water-cooled air conditioner

C.

Air-cooled chilled water air conditioner

D.

Water-cooled chilled water air conditioner

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Questions 32

The air-conditioning energy efficiency ratio is the ratio of the effective input power to the cooling capacity, and its value is W/W Express.

Options:

A.

True

B.

False

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Questions 33

UPS The functions are ____________ .

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Questions 34

The following ____________ air supply methods mainly use process air conditioners that have a large amount of waste heat to be taken away from the lower working area.

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Questions 35

Dynamic ring monitoring system can be applied to ____________ .

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Questions 36

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

Options:

A.

True

B.

False

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Questions 37

If ups The capacity is 20KVA, Then in normal work,ups The front-end input capacity may be ____________ .

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Questions 38

In the case of ____________, ups Will work in static bypass mode.

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Questions 39

Dual power switch ATS According to different switch types, it can be divided into ____________ .

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Questions 40

High sensible heat ratio is the only difference between precision air conditioners and civil air conditioners.

Options:

A.

True

B.

False

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Questions 41

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

Options:

A.

True

B.

False

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Questions 42

Data center room PUE The smaller the value, the greater the power consumed by the supporting infrastructure of the data center such as cooling and power supply.

Options:

A.

True

B.

False

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Questions 43

UPS Also known as AC uninterrupted power supply system, for online upsWhen the AC input is normal, the ____________ will supply power to the system.

Options:

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Questions 44

In the main road mode, when ups The front-end voltage is at 220V±10%When fluctuating,ups The output voltage will also have Larger fluctuations.

Options:

A.

True

B.

False

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Questions 45

In Huawei's dynamic environment monitoring system, it is at the data collection layer and can integrate the underlying components ____________ . The equipment through which information is transmitted to the monitoring software is ____________ .

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Questions 46

For valve-regulated lead-acid batteries, the function of the safety valve is ____________ .

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Questions 47

The condensate of the air conditioner is formed by condensation after the air warning surface cooler cools down.

Options:

A.

True

B.

False

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Questions 48

When the battery is in use, sunlight can directly shine on the battery.

Options:

A.

True

B.

False

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Questions 49

The following ____________ are not part of the chilled water air conditioner.

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Questions 50

The following ____________ is not the basic function of low-voltage circuit breakers.

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Questions 51

There are three different classifications of grounding forms in low-voltage power distribution systems ____________, where the first capital letter represents ____________ .

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Questions 52

In the low-voltage power distribution system,PE The function of the line is to provide a path for the fault current when the power supply system fails.

Options:

A.

True

B.

False

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Questions 53

The valve-controlled sealed lead-acid battery safety valve has ____________ Function.

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Questions 54

During the construction process, if there is an object falling or hitting, it should be used ____________ .

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Questions 55

In the dynamic environment monitoring system, the user queries the alarm information of the refrigeration equipment through the ____________ function.

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Questions 56

In the air conditioning system, the function of the oil and gas separator is to separate the lubricating oil from the compressor exhaust and return the separated lubricating oil to the compressor.

Options:

A.

True

B.

False

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Questions 57

Which of the following statements about the battery is wrong:

Options:

A.

The battery room should prevent the temperature from being too high to prevent thermal runaway.

B.

The reason for the swelling of the battery is that the pressure becomes higher due to excessive gas evolution.

C.

When the battery reaches the end of its service life, it does not require special treatment and can be sold directly to scrap for recycling.

D.

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

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Questions 58

UPS The front-end input can be two mains, one main and one standby, or one mains and one diesel engine input.

Options:

A.

True

B.

False

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Questions 59

Huawei Monitoring System NetEco Cannot provide to third-party network management system SNMP Formal interface.

Options:

A.

True

B.

False

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Questions 60

During the construction process, work in contact with sharp instruments and use ____________ .

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Questions 61

The surface cooler controls the indoor temperature and humidity through the heat exchange between the refrigerant and the indoor air.

Options:

A.

True

B.

False

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Exam Code: H12-411_V2.0
Exam Name: HCIA-Data Center Facility V2.0
Last Update: Dec 2, 2024
Questions: 204
$66  $164.99
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