[Oct-2021] Updated HCNP-DCF-BFDO H12-421 Exam Questions BUNDLE PACK
Master The Huawei Content H12-421 EXAM DUMPS WITH GUARANTEED SUCCESS!
NEW QUESTION 20
The data center energy efficiency PUE is as small as possible, and the minimum can be close to zero.
- A. False
- B. True
Answer: A
NEW QUESTION 21
UPS2000-A-(1-3kVA) closes the mains input switch and directly enters the bypass working state.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 22
After the UPS5000 is installed with ejector fan, you need to set the status of "Ejector Fan" as "Allow" in the menu. Otherwise, the ejector modules cannot be used normally.
- A. True
- B. False
Answer: A
NEW QUESTION 23
Smart ETH sockets support up to () cascading.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 24
If the customer load cannot be power-off, what should be taken care when closing the maintenance bypass switch? (Multiple choice)
- A. First perform EPO then close maintenance switch
- B. The maintenance bypass switch can also be closed in the inverter power supply mode.
- C. Turn off the inverter, let the UPS be in bypass power supply mode and then close the maintenance bypass switch.
- D. Close the maintenance switch first and then execute the EPO.
Answer: C,D
NEW QUESTION 25
The alarm management functions supported by the ECC800 are (). (Multiple choice)
- A. Filtering alarms
- B. Alarm parameter setting
- C. Alarm data export
- D. View historical alarms
Answer: A,B,C,D
NEW QUESTION 26
Data center siting needs to evaluate the following () factors. (Multiple choice)
- A. Physical and geographical conditions
- B. Cost factors
- C. Supporting facilities
- D. Building structure
Answer: A,B,C,D
NEW QUESTION 27
In NetEco "Video" function, you can enter ( ) and other operations (Multiple choice)
- A. Video live browsing
- B. Create a camera
- C. Modify the camera
- D. Delete the camera
Answer: A,B,C,D
NEW QUESTION 28
The NetCol5000C device is powered on and the reason why the fan does not turn may be ().
- A. The machine power module is faulty or abnormal.
- B. Condensate drainage is not smooth
- C. Strong drainage system failure
- D. The filter is dirty
Answer: A
NEW QUESTION 29
When the UPS5000-E (), boot will automatically run the Quick Setup Wizard. (Multiple Choice)
- A. First boot
- B. Start after recovery failure
- C. Turn it off and then on.
- D. The device is turned on again after the factory settings are restored.
Answer: A,D
NEW QUESTION 30
When a fire occurs in the cabinet, what is used to activate the gas fire extinguishing device on site?
- A. Solenoid valve
- B. Pressure switch
- C. Emergency stop button / manual deflation button
- D. Fire cylinders
Answer: C
NEW QUESTION 31
To balance the capacity loss caused by the self-discharge of the battery during the use of the battery, it is necessary to charge the battery continuously and for a long time at constant voltage, which is called ().
- A. balanced charging
- B. charging
- C. self-discharge
- D. charging test
Answer: B
NEW QUESTION 32
Which of the following is not the reason why the NetCol 8000-A infrared humidifier water tray is not filled with water?
- A. Infrared lamp damage
- B. Inlet line valve is not open
- C. The water injection pipe is blocked
- D. The water pressure is abnormal
Answer: A
NEW QUESTION 33
In the battery model 6-GFM-150, 150 indicates the battery ().
- A. Maximum capacity
- B. Rated capacity
- C. Minimum capacity
- D. Actual capacity
Answer: B
NEW QUESTION 34
UPS2000-G-(6-20kVA) battery is not connected and does not affect the normal power supply of the system, but the UPS loses the backup power supply capability.
- A. True
- B. False
Answer: A
NEW QUESTION 35
In the air conditioning system, the pipe can maintain a positive pressure and the pipe can maintain a negative pressure.
- A. False
- B. True
Answer: A
NEW QUESTION 36
The reason for using the EPO status interface in the parallel step of the UPS5000-E is ().
- A. Protect the battery from discharge
- B. Prevent electric shock and protect personal safety
- C. Cut off the output and set the parallel parameters
- D. Power off the load to prevent damage to the load device
Answer: C
NEW QUESTION 37
How many kVA power modules does the UPS5000-S-400K use?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION 38
In the NetCol5000-A air conditioner, if a large number of air bubbles are observed in the liquid crystal mirror, it indicates that the refrigerant system lacks refrigerant, and the refrigerant should be charged as needed.
- A. True
- B. False
Answer: A
NEW QUESTION 39
In general, the air supply distance of the air duct is shorter than that of the hood air supply.
- A. TRUE
- B. FALSE
Answer: B
NEW QUESTION 40
When the NeCol5000-A is under nitrogen pressure, the required nitrogen bottle must be equipped with a pressure reducing valve.
- A. True
- B. False
Answer: A
NEW QUESTION 41
Which of the following is the correct procedure for powering up the UPS5000?
- A. Set parameters, check system status -> Close main and bypass input switch -> Inverter start -> Close battery switch -> Open load
- B. Close the main road and bypass input switch -> set parameters, check system status -> inverter start -> close battery switch -> open load
- C. Close the main circuit and bypass input switch -> set parameters, check system status -> close battery switch -> inverter start -> open load
- D. Close the main road and bypass input switch -> Inverter start -> Set parameters, check system status -> Close battery switch -> Open load
Answer: B
NEW QUESTION 42
If the UPS5000-E-400K is bypassed and the maintenance bypass is closed, both the main power module and the bypass module stop working.
- A. False
- B. True
Answer: A
NEW QUESTION 43
When a fire occurs in the cabinet and the fire extinguishing device releases the extinguishing agent into the protection zone, what will display the words "Don't let in".
- A. Emergency light
- B. Venting indicator
- C. Fire alarm bell
- D. Sound and light alarm
Answer: B
NEW QUESTION 44
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