[Mar 08, 2022] Pass H12-421-ENU Review Guide, Reliable H12-421-ENU Test Engine
H12-421-ENU Test Engine Practice Test Questions, Exam Dumps
NEW QUESTION 82
What is the control component of the modular data center closed access door?
- A. Cabinet collector
- B. sunroof actuator
- C. Access control actuator
- D. Multi-function sensor
Answer: C
NEW QUESTION 83
If the customer load cannot be power-off, what should be taken care when closing the maintenance bypass switch? (Multiple choice)
- A. The maintenance bypass switch can also be closed in the inverter power supply mode.
- B. Close the maintenance switch first and then execute the EPO.
- C. Turn off the inverter, let the UPS be in bypass power supply mode and then close the maintenance bypass switch.
- D. First perform EPO then close maintenance switch
Answer: B,C
NEW QUESTION 84
The refrigerant air cylinder of Huawei air-cooled air conditioner does not need to be inverted on the electronic scale when charging the refrigerant.
- A. False
- B. True
Answer: A
NEW QUESTION 85
Which part of the data center design is currently affecting its PUE?
- A. Refrigeration system
- B. Building system
- C. Power supply and distribution system
- D. Decoration system
Answer: A
NEW QUESTION 86
Which humidifier is used by the NetCol 8000-A?
- A. Infrared humidifier
- B. High pressure micro-mist humidifier
- C. Electrode humidifier
- D. Wet film humidifier
Answer: A
NEW QUESTION 87
When a fire occurs in the FusionModule1000 box, the deflation indicator will show the words "Don't put in" to warn the site personnel not to enter the deflation zone.
- A. True
- B. False
Answer: A
NEW QUESTION 88
The following () characteristics are standard features of the NetCol 8000-C air conditioner.
- A. Humidification function
- B. G4 grade filter
- C. Dual power supply
- D. Water immersion sensor
Answer: B
NEW QUESTION 89
Data center siting needs to evaluate the following () factors. (Multiple choice)
- A. Building structure
- B. Cost factors
- C. Physical and geographical conditions
- D. Supporting facilities
Answer: A,B,C,D
NEW QUESTION 90
Which of the following air conditioning systems need to be equipped with a cooling tower or dry cooler?
- A. CW air-cooled type
- B. DX water-cooled type
- C. Direct ventilation air conditioning system
- D. DX air-cooled type
Answer: B
NEW QUESTION 91
Among the components of the UPS5000-E, () can be hot plug. (Multiple choice)
- A. Dry joint card
- B. Energy Control Sheet
- C. Power module
- D. Bypass module
Answer: A,B,C,D
NEW QUESTION 92
The UPS5000 option temperature and humidity sensor does not support cascading.
- A. False
- B. True
Answer: A
NEW QUESTION 93
What is the terminal voltage of the battery in the open state?
- A. Discharge voltage
- B. Open circuit voltage
- C. Rated voltage
- D. Actual voltage
Answer: B
NEW QUESTION 94
The NetCol5000-A air conditioning humidification function may be invalid because of (). (Multiple choice)
- A. Humidifier circuit breaker is not closed
- B. The outdoor unit is not running
- C. Low indoor temperature
- D. Humidification barrel is damaged
Answer: A,B,D
NEW QUESTION 95
The multi-function sensor in the Fusion Module2000 modular channel can be connected to the () component.
- A. Cabinet collector
- B. Access control actuator
- C. WFi converter
- D. Smart ETH socket
Answer: D
NEW QUESTION 96
The functions that the ECC800 can implement are (). (Multiple choice)
- A. Linkage rule settings
- B. Access control user management
- C. Historical data export
- D. Query system alarms
Answer: A,B,C,D
NEW QUESTION 97
In the Huawei NetCol5000-A line-class precision air conditioner, the () parts are optional.
- A. Fan
- B. Electric heating
- C. Evaporator
- D. Compressor
Answer: B
NEW QUESTION 98
To modify the plane view of the ECC800 micromodule, need to log in to the Web to operate with administrator privileges.
- A. True
- B. False
Answer: A
NEW QUESTION 99
Huawei NeCol5000-A row-level precision air conditioner eliminates local hot spots by means of near-end cooling.
- A. True
- B. False
Answer: A
NEW QUESTION 100
What may NetCol 5000-C insulation cotton damage result in?
- A. Fan noise is too loud
- B. Pipeline condensation
- C. Fan blocked
- D. The drainage capacity of the equipment is significantly reduced
Answer: B
NEW QUESTION 101
In general, the air supply distance of the air duct is shorter than that of the hood air supply.
- A. FALSE
- B. TRUE
Answer: A
NEW QUESTION 102
On the NetEco interface, a modular can only bind () ECC800 devices.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 103
Which mode of air supply is suitable for data centers with high power density in a single cabinet.
- A. Row level
- B. Upper hood
- C. Under the floor
- D. Upper air duct
Answer: A
NEW QUESTION 104
The main reason for the energy-saving effect of the closed cold/hot passage is (). (Multiple choice)
- A. Isolating hot and cold air, avoiding the confusion of hot and cold air and improving the utilization of cold air.
- B. Reduce the humidification power consumption by increasing the supply air temperature and reducing the power consumption of humidification.
- C. The closed heat channel can increase the return air temperature and improve the cooling efficiency.
- D. It can increase the air supply temperature of the air conditioner, thus reducing the energy consumption of the air conditioner.
Answer: A,B,C,D
NEW QUESTION 105
After the NetCol5000-C is set to the hot backup function, no backup machine is running, and a single unit adjusts the water valve opening according to the detected actual temperature to respond to the demand.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 106
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