[Nov-2021] Huawei H12-411 Official Cert Guide PDF
Exam H12-411: HCIA-Data Center Facility V1.0 - DumpsTorrent
Huawei H12-411 Exam Syllabus Topics:
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NEW QUESTION 72
Which of the following components can check whether the refrigerant contains water?
- A. water gauge
- B. depending on the oil mirror
- C. device for drying and filtering
- D. Solenoid valve
Answer: A
NEW QUESTION 73
RS485 interface only supports two-wire system, does not support four-wire system.
- A. False
- B. True
Answer: A
NEW QUESTION 74
Which of the following options do not qualify as direct expansion air-cooled air conditioners?
- A. can not be installed over long distances, or large loss of refrigeration
- B. Refrigeration energy efficiency is relatively low
- C. Simple structure, easy installation, low cost
- D. Installation distance is unlimited
Answer: D
NEW QUESTION 75
What should be used during construction when low-voltage live working(below 1kV)? (Multiple choice)
- A. Insulation service
- B. Insulating shoes
- C. Helmets
- D. Insulation gloves
Answer: A,B,D
NEW QUESTION 76
In the main inverter modeT the inverter will change from main inverter to battery inverter mode when overloaded.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 77
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.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 78
In the process of construction, carry out the debris splash operation, should use ().
- A. anti-impact goggles
- B. helmets
- C. seat belt
- D. anti-smashing shoes
Answer: A
NEW QUESTION 79
Which of the following is not belongs to the monitoring function provided by Huawei NetEco.
- A. software upgrade
- B. Access monitoring
- C. Real-time signal
- D. Current alarm
Answer: A
NEW QUESTION 80
Compared with the comfort air conditioning, what are the advantages of the equipment room dedicated air conditioning?
- A. the year refrigeration
- B. more accurate temperature and humidity control
- C. big air volume, little enthalpy difference
- D. high sensible heat ratio
Answer: A,B,C,D
NEW QUESTION 81
The STS Static Transfer Switch enables switching between different input power supply and provides dual power supply for single power load.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 82
The following () is the advantage of the UPS N system.
- A. Lack of redundancy
- B. UPS work in the design of high-load conditions, the highest efficiency
- C. reliability is higher than mains
- D. low cost hardware configuration
Answer: B,C,D
NEW QUESTION 83
In the battery installation process, the use of high-voltage battery maintenance channel should be insulated.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 84
UPS common system configuration are N system, N + X system and 2N system.
- A. False
- B. True
Answer: B
NEW QUESTION 85
Huawei NetEco monitoring system does not support remote door open.
- A. False
- B. True
Answer: A
NEW QUESTION 86
In the dynamic environment monitoring system, the user queries the alarm information of the cooling equipment through () function.
- A. Asset Management
- B. Entrance guard management
- C. Software Management
- D. Alarm Management
Answer: D
NEW QUESTION 87
UPS front-end input can be two-way mains, a master and a backup. Also could be all the way electricity, all the way to the oil machine input.
- A. False
- B. True
Answer: B
NEW QUESTION 88
Which of the following can be used as a side outlet can also be used as a lower outlet?
- A. double louver tuyere
- B. Under the type of diffuser
C Ventilated floor - C. Spout
Answer: A
NEW QUESTION 89
In the UPS system, the most comprehensive description of the role of the inverter circuit is?
- A. Convert AC to DC
- B. Convert the rectified DC voltage or battery voltage into AC voltage
- C. The battery voltage is converted to AC voltage
- D. Convert the rectified DC voltage into AC voltage
Answer: B
NEW QUESTION 90
Which of the following is not a basic function of a low-voltage circuit breaker?
- A. Short circuit protection
- B. dual power switch
- C. Break
- D. Overcurrent protection
Answer: B
NEW QUESTION 91
For the same MCB circuit breaker, the rated ultimate short-circuit breaking capacity leu is generally less than the rated operating short-circuits breaking capacity Ics.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 92
The core components of the refrigeration system include (). (Multiple Choice)
- A. Compressor
- B. Condenser
- C. Evaporator
- D. Expansion valve
Answer: A,B,C,D
NEW QUESTION 93
In the low-voltage distribution system, the role of the N line is used to exchange working current backflow.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 94
Under certain conditions of atmospheric pressure and water vapor content, to cool the air, when the air reaches saturation, cooling will continue to condense when the temperature is ().
- A. Absolute temperature
- B. Dry bulb temperature
- C. Dew point temperature
- D. Wet bulb temperature
Answer: C
NEW QUESTION 95
Which fire extinguishing agent is mainly used in data center fire protection system?
- A. Halon 1301
- B. Haloalkanes
- C. water
- D. Heptafluoropropane
Answer: D
NEW QUESTION 96
Huawei NetEco monitoring system supports hierarchical network management functions.
- A. False
- B. True
Answer: B
NEW QUESTION 97
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