Huawei HCIA-Data Center Facility V1.0 - H12-411 Exam Practice Test
The principle of evaporator is to convert refrigerant from liquid to gas, take away the heat of the object to be refrigerated, to achieve refrigeration.
Correct Answer: B
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Air conditioning has three major indicators; the three major indicators refer to (). (Multiple Choice)
Correct Answer: A,B,C
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Which of the following outdoor modles belongs to double fan?
Correct Answer: A
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The role of Huawei chilled water air conditioner chassis power supply is to provide a stable fan power supply.
Correct Answer: B
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Lead batteries are generally connected in series after the first parallel connection.
Correct Answer: B
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How much V is the contact voltage limit (equivalent to the safety voltage) prescribed by the International Electrotechnical Commission (IEC)? And provides 25V following do not need to consider the safety measures to prevent electric shock.
Correct Answer: C
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There are three different categories of earthing (TN, TT and IT) in low voltage distribution systems. The second capital letter represents ().
Correct Answer: A
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In a data center use fire water and foam extinguishing system will not cause damage to communications equipment.
Correct Answer: A
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pPUE (Partial PUE) is an extension of the data center PUE, used to evaluate and analyzing the energy efficiency of a data center's local area or equipment.
Correct Answer: B
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Valve-regulated lead-acid batteries in English abbreviation is VRLA.
Correct Answer: B
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Huawei monitoring system NetEco supports to send the alarm message to users through (). (Multiple Choice)
Correct Answer: A,C
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Which of the following can be used as a side outlet can also be used as a lower outlet?
Correct Answer: B
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RER (Renewable Energy Ratio) is used to measure data center using Renewable Energy, so as to promote the solar Energy, wind Energy, hydropower and other Renewable, no carbon emissions or little Energy utilization of carbon emissions.
Correct Answer: B
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Leakage protection by the action mode is mainly divided into electronic and electromagnetic.
Correct Answer: B
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