H12-411_V2.0 HCIA-Data Center Facility V2.0 Questions and Answers
CLF Defined as the power consumption of data center cooling equipment and IT The ratio of equipment power consumption.
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.
The following parts can check whether the refrigerant contains moisture ____________ .
R410a Refrigerants can produce the greenhouse effect and destroy the ozone layer.
The throttling devices used by Huawei ' s air-cooled precision air conditioners are ____________ .
ATS The dual power supply automatic switch can realize the fast mechanical switching of the two power supplies.
The surface cooler controls the indoor temperature and humidity through the heat exchange between the refrigerant and the indoor air.
In the data center power supply and distribution system, the low-voltage circuit breaker with three-stage protection feature is used for.
Huawei Monitoring System NetEco Must not support monitoring of third-party devices.
The components of Huawei ' s dynamic environment monitoring system are ____________ .
STS The static transfer switch can switch between different input power sources and provide dual power supply for single power loads.
The humidifier used in Huawei ' s row-level precision air conditioner is an infrared humidifier.
The throttling devices used by Huawei ' s air-cooled precision air conditioners are ____________ .
During the construction process, work in contact with sharp instruments and use ____________ .
The following () options belong to water-cooled chilled water air conditioners. (Multiple choice)
Dual power switch ATS According to different switch types, it can be divided into ____________ .
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.
Huawei Monitoring System NETECO Support hierarchical network management function.
The following ____________ are used in Huawei ' s row-level precision air conditioners.
The following ____________ are not harmful effects of electric current on the human body.
PUE The closer the value ____________, indicating that the energy efficiency status of the data center is good.
There are three different classifications of grounding forms in low-voltage power distribution systems, ____________ . The second capital letter represents ____________ .
RER It is used to measure the use of renewable energy in the data center to promote the regeneration of solar, wind, and water energy, and the use of energy with no carbon emissions or very little carbon emissions.
In the battery structure, the ____________ component functions to remove excess gas.
Protective grounding: Grounding refers to the direct connection with the earth, and a certain point of the live part of an electrical device or electrical circuit is connected to a large point. When the electrical device or other device is normal, a certain point of the uncharged part is artificially connected to the earth.
When the battery electrolyte leaks, ____________ treatment is more appropriate.
During the battery installation process, the maintenance channel of the high-voltage battery pack used should be insulated.
UPS Also known as AC uninterrupted power supply system, for online upsWhen the AC input is normal, the ____________ will supply power to the system.
same MCB Rated ultimate short-circuit breaking capacity of circuit breaker LCU Generally less than the rated operating short-circuit breaking capacity LCS.
At present, storage batteries are mainly installed in racks and cabinets in data centers.
In the access control system interface, the functions that can be realized are ____________ .
MCB Circuit breaker CThe setting value of level tripping is in ____________, used in ITLoad occasions.
pPUE is a data center PUE An extension of the concept, used to evaluate the energy efficiency of a local area of a data center or equipment And analysis.
The following ____________ options do not belong to the characteristics of direct air-cooled air-conditioning.
The dynamic environment monitoring system supports the alarm management function.
The use of water fire and foam fire extinguishing systems in the data center will not cause damage to communication equipment.
Huawei Monitoring System NetEco Cannot provide to third-party network management system SNMP Formal interface.
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.
In the dynamic environment monitoring system, ____________ is used to indicate the severity of the corresponding fault.
Environmentally friendly refrigerant R410A Refrigeration performance is better than non-refrigerant R22 better.
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 ____________ .
During the construction process, the nitrogen bottle operation must be equipped with special ____________ .
The user can use the ____________ function to assign personnel to handle the fault.
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.
For unsaturated air, dry bulb temperature, wet bulb temperature, A The relationship between point temperature is ____________ .
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.
The following components that can improve the heat exchange capacity of the heat exchanger are ____________ .
The data center computer room monitoring system mainly monitors power systems, environmental systems, and fire fighting systems.
When the mains input range is voltage:150-260VAC,frequency:45-60Hz,the following ups Working range ____________ It can work normally in the inverter state of the main circuit.
PDF + Testing Engine
Testing Engine
PDF (Q&A)
