[2021] H12-421 Actual Exam Dumps, H12-421 Practice Test
VCEEngine H12-421 dumps & HCNP-DCF-BFDO sure practice dumps
NEW QUESTION 119
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 120
The operation noise of the NetCol5000-A air conditioning unit is abnormal. It should be checked whether the compressor, fan, pipeline, etc. are fixed normally and there is looseness.
- A. False
- B. True
Answer: B
NEW QUESTION 121
In the water side natural cooling scheme, cooling water can be directly supplied from the cooling tower to the air conditioner to complete the cooling.
- A. False
- B. True
Answer: B
NEW QUESTION 122
Which mode of air supply is suitable for data centers with high power density in a single cabinet.
- A. Upper air duct
- B. Row level
- C. Upper hood
- D. Under the floor
Answer: B
NEW QUESTION 123
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. Turn off the inverter, let the UPS be in bypass power supply mode and then close the maintenance bypass switch.
- C. Close the maintenance switch first and then execute the EPO.
- D. The maintenance bypass switch can also be closed in the inverter power supply mode.
Answer: B,C
NEW QUESTION 124
The UPS5000-E accepts input voltage frequency in a range of () Hz.
- A. 40-70
- B. 50-60
- C. 55-65
- D. 45-70
Answer: A
NEW QUESTION 125
In the Huawei NetCol5000-A line-class precision air conditioner, the () parts are optional.
- A. Fan
- B. Evaporator
- C. Compressor
- D. Electric heating
Answer: D
NEW QUESTION 126
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 127
The rated voltage of the cell in the VRLA battery is ().
- A. 2V
- B. 1V
- C. 12V
- D. 6V
Answer: A
NEW QUESTION 128
If the ECC800 is configured with a SIM card, the SIM card should be installed in ().
- A. USB interface
- B. ECC800 power module slot
- C. ECC800 main control module left slot
- D. Below the ECC800 antenna port
Answer: C
NEW QUESTION 129
During the use of the battery pack, the appearance is normal, but there is no current during charging, and the voltage drop is zero at the moment of discharge, and it cannot be discharged. What could be happened in the following?
- A. Battery leakage
- B. backward battery
- C. Breaking the battery pack
- D. Sulfation
Answer: C
NEW QUESTION 130
Which of the following technology or scheme can effectively reduce the PUE? (Multiple choice)
- A. Increase battery capacity
- B. Precise air supply
- C. Efficient modular UPS
- D. Closed cold/hot passage
Answer: B,C,D
NEW QUESTION 131
The device accesses the ECC800 monitoring system through a smart ETH socket, using the () interface of the intelligent FTH socket.
- A. AI/DI
- B. FE
- C. PoE
- D. RS485
Answer: C
NEW QUESTION 132
The video can be viewed on NetEco only after the video camera is configured on the IVS.
- A. False
- B. True
Answer: B
NEW QUESTION 133
The following () parts can control the room lighting and control the Pad charging.
- A. Cabinet collector
- B. Access control actuator
- C. Actuator
- D. Smart ETH socket
Answer: C
NEW QUESTION 134
Before the UPS5000 is powered on, it is necessary to check that the UPS input switch, bypass switch, output switch, maintenance bypass switch, battery open) have all been placed in the "OFF" state.
- A. False
- B. True
Answer: B
NEW QUESTION 135
To modify the plane view of the ECC800 micromodule, need to log in to the Web to operate with administrator privileges.
- A. False
- B. True
Answer: B
NEW QUESTION 136
In the battery model 6-GFM-150, 150 indicates the battery ().
- A. Actual capacity
- B. Maximum capacity
- C. Rated capacity
- D. Minimum capacity
Answer: C
NEW QUESTION 137
In the process of disconnecting the battery pack switch, if there are multiple sets of batteries, first disconnect the main switch between the battery pack and the UPS, and then disconnect the switch of each battery pack.
- A. False
- B. True
Answer: B
NEW QUESTION 138
The cycle life of the battery is direct proportional to the depth of discharge.
- A. False
- B. True
Answer: A
NEW QUESTION 139
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