[Oct-2021] H12-421 Dumps With 100% Verified Q&As - Pass Guarantee or Full Refund
Pass Huawei H12-421 Exam With Practice Test Questions Dumps Bundle
NEW QUESTION 138
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. True
- B. False
Answer: B
NEW QUESTION 139
The Netcol 5000-A35kW uses an electronic expansion valve.
- A. True
- B. False
Answer: B
NEW QUESTION 140
BCB-BOX is a UPS5000-E option for connection control between battery pack and UPS system. It has overload, short circuit protection and remote management trip function.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 141
When installing the UPS battery, the installation tool does not need to be insulated because the load is not charged.
- A. True
- B. False
Answer: B
NEW QUESTION 142
To use the NetEco APP on PAD to query the PUE information of the current computer room, you need to click the () menu.
- A. Energy consumption
- B. Monitoring
- C. Alarm
- D. More
Answer: A
NEW QUESTION 143
It is necessary to remove the fixed sheet metal parts of the compressor before installing the indoor unit in the air-cooled air conditioner.
- A. True
- B. False
Answer: A
NEW QUESTION 144
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. True
- B. False
Answer: B
NEW QUESTION 145
The NetCol5000-A air conditioning humidification function may be invalid because of (). (Multiple choice)
- A. Humidification barrel is damaged
- B. Humidifier circuit breaker is not closed
- C. The outdoor unit is not running
- D. Low indoor temperature
Answer: A,B,C
NEW QUESTION 146
What are the reasons for the excessive noise of the NetCol5000-C fan? (multiple choice)
- A. The fan outlet is dirty
- B. Loose fan installation
- C. Fan failure
- D. The filter is dirty
Answer: A,B,C,D
NEW QUESTION 147
Which of the following are the characteristics of Huawei NetCol5000-A row-level precision air conditioner cooling capacity adjustment?
- A. DC inverter compressor, which can 20%~100% infinitely adjust cooling capacity.
- B. When the load is lower than 30%, the compressor starts and stops frequently, and the valve frequently actions and is easily stuck.
- C. When the load is lower than 20%, the electric heating heat compensation is turned on, and the compressor is continuously operated without stopping.
- D. Invariable frequency compressor, can't adjust cooling capacity infinitely.
Answer: A,C
NEW QUESTION 148
What are the working mode of the runner natural cooling scheme? (Multiple choice)
- A. Complete compressor cooling mode
- B. Complete natural cooling mode
- C. Direct ventilation mode
- D. Mixed mode
Answer: A,B,D
NEW QUESTION 149
The multi-function sensor in the Fusion Module2000 modular channel can be connected to the () component.
- A. Cabinet collector
- B. WFi converter
- C. Smart ETH socket
- D. Access control actuator
Answer: C
NEW QUESTION 150
What can be detected by the optional battery inspection instrument? (Multiple choice)
- A. Internal resistance
- B. Voltage
- C. Battery case temperature
- D. Frequency
Answer: A,B,C
NEW QUESTION 151
The NetCol5000-C air conditioner does not support the power module plug and play maintenance.
- A. True
- B. False
Answer: B
NEW QUESTION 152
When the unit is working, the load of the UPS2000-G is connected to the PL, what condition will cause the load to be de-energized? (Multiple choice)
- A. Overload
- B. Mains low voltage
- C. Battery low voltage
- D. Mains input interruption
Answer: A,C
NEW QUESTION 153
The alarm management functions supported by the ECC800 are (). (Multiple choice)
- A. View historical alarms
- B. Filtering alarms
- C. Alarm parameter setting
- D. Alarm data export
Answer: A,B,C,D
NEW QUESTION 154
The functions provided by Huawei's monitoring system NetEco are: (multiple choice)
- A. Support system power distribution view display
- B. Provide a view creation tool for quick configuration view
- C. Support modular level/cabinet level view display
- D. Provide 2D, 3D data center view display
Answer: A,B,C,D
NEW QUESTION 155
What are the access control type of the micro module? (Multiple Choice)
- A. Fingerprint password swipe access control machine
- B. Password swipe access control machine
- C. Fingerprint swipe access control machine
- D. Face recognition access control
Answer: A,B,C
NEW QUESTION 156
Before the battery is installed, a single battery open circuit voltage is required: 12V battery is greater than or equal to 12.60V or 2V battery is greater than or equal to 2.10V. When it is found to be unqualified, the battery needs to be recharged.
- A. True
- B. False
Answer: A
NEW QUESTION 157
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