[Nov-2021] Updated HCNP-DCF-BFDO H12-421 Exam Questions BUNDLE PACK
Master The Huawei Content H12-421 EXAM DUMPS WITH GUARANTEED SUCCESS!
NEW QUESTION 56
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. self-discharge
- B. balanced charging
- C. charging test
- D. charging
Answer: D
NEW QUESTION 57
ECC800 does not support historical data export.
- A. True
- B. False
Answer: B
NEW QUESTION 58
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 59
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 60
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 61
The following air conditioning systems need to be equipped with a cooling tower or dry cooler ().
- A. DX water-cooled type
- B. DX air-cooled type
- C. CW air-cooled type
- D. Direct ventilation air conditioning system
Answer: A
NEW QUESTION 62
The Netcol 5000-A35kW uses an electronic expansion valve.
- A. True
- B. False
Answer: B
NEW QUESTION 63
When four UPS2000G-20K parallel units are set and the number of redundant units in the parallel setting is set to "1", the capacity of the system is () KVA.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 64
When the single machine is working, after the function of power-off of the ups2000-g machine is prohibited, the PL port has no output when overload or battery power is low.
- A. True
- B. False
Answer: B
NEW QUESTION 65
In the stable operation of the NeCol5000-A35kW air conditioner compressor, the oil level observed by the oil sight is regarded as qualified at the ( ) position.
- A. 1/3~1
- B. >1
- C. 1/4~1/2
- D. 0~14
Answer: A
NEW QUESTION 66
The 2.4G antenna on the ECC800 should be installed in ( ).
- A. RS485 port
- B. 3G/4G antenna interface
- C. RF_ZA line interface
- D. DO output dry contact
Answer: C
NEW QUESTION 67
The UPS2000-G cannot implement a shared battery pack.
- A. True
- B. False
Answer: B
NEW QUESTION 68
When the temperature detector or smoke detector in the FusionModule1000 generates an alarm, ( ) emits a continuous beeping sound to remind you to take measures as soon as possible to avoid a major accident. (Multiple choice)
- A. Buzzer
- B. Sound and light alarm
- C. Temperature detector
- D. Smoke detector
Answer: A,B,D
NEW QUESTION 69
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 70
When the UPS2000-G shuts down the stand-alone system, which one of the following needs to be operated?
- A. Continuously perform 2 "shutdown operations" on the machine
- B. "Shutdown operation" for all UPS in the system
- C. Disconnect the input directly from the machine
- D. Just perform a "shutdown operation" on the machine.
Answer: A
NEW QUESTION 71
Which part of the data center design is currently affecting its PUE?
- A. Power supply and distribution system
- B. Refrigeration system
- C. Building system
- D. Decoration system
Answer: B
NEW QUESTION 72
The straight pipe interval fixedly supported by NetCol5000-C piping is ().
- A. 3200mm
- B. 3000mm
- C. 2800mm
- D. 2500mm
Answer: D
NEW QUESTION 73
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 74
When the status of UPS2000G battery is "NA", it may be ().
- A. The battery is connected properly.
- B. Battery low voltage
- C. The battery is not connected
- D. Battery N line is not connected
Answer: C
NEW QUESTION 75
NeteCol can assign operational rights to user groups, or assign operational rights directly to users.
- A. True
- B. False
Answer: A
NEW QUESTION 76
What is the control component of the modular data center closed access door?
- A. Cabinet collector
- B. Access control actuator
- C. Multi-function sensor
- D. sunroof actuator
Answer: B
NEW QUESTION 77
The UPS5000 option temperature and humidity sensor does not support cascading.
- A. True
- B. False
Answer: B
NEW QUESTION 78
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