Updated Jan 22, 2022 Certification Exam H12-421 Dumps - Practice Test Questions
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NEW QUESTION 81
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 82
The FusionModule1000B series solution can meet the Tier4 power supply requirements when using the 2N power supply and distribution system.
- A. True
- B. False
Answer: B
NEW QUESTION 83
When the maintenance engineer arrives at the customer site, the working environment around the site should be recorded. The main collection items are (). (Multiple choice)
- A. Ventilation
- B. Equipment installation distance
- C. If there is a bad environment around it (such as dust or moisture)
- D. Ambient temperature
Answer: A,B,C,D
NEW QUESTION 84
The sunroof actuator can control the flip sunroof of the modular data center closed channel.
- A. True
- B. False
Answer: A
NEW QUESTION 85
The same group of batteries cannot be mixed with batteries of different capacities, different specifications, different batches, and different manufacturers.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 86
What can convert a PoE signal into a WiFi signal?
- A. Skylight actuator
- B. AC actuator
- C. WFi converter
- D. VCN
Answer: C
NEW QUESTION 87
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 88
When the NetCol5000-C commissions the drainage device, lift the high floater by hand for 5 seconds. At this time, the dual water pump is turned on at the same time, and the "discharge abnormality alarm" appears.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 89
ECC800 default management authority user name is admin, admin has all the rights to operate the web interface function.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION 90
When a fire occurs in the cabinet, what is used to activate the gas fire extinguishing device on site?
- A. Pressure switch
- B. Fire cylinders
- C. Emergency stop button / manual deflation button
- D. Solenoid valve
Answer: C
NEW QUESTION 91
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 92
In the installation scenario where the indoor unit is higher than the outdoor unit, the oil trap must be set.
- A. True
- B. False
Answer: B
NEW QUESTION 93
Which of the following is the correct procedure for powering up the UPS5000?
- A. Close the main road and bypass input switch -> set parameters, check system status -> inverter start -> close battery switch -> open load
- B. Close the main circuit and bypass input switch -> set parameters, check system status -> close battery switch -> inverter start -> open load
- C. Close the main road and bypass input switch -> Inverter start -> Set parameters, check system status -> Close battery switch -> Open load
- D. Set parameters, check system status -> Close main and bypass input switch -> Inverter start -> Close battery switch -> Open load
Answer: A
NEW QUESTION 94
What does NetEco basic features include? (Multiple choice)
- A. User Management
- B. Video management
- C. Report Management
- D. Access control management
Answer: A,B,C,D
NEW QUESTION 95
NetEco's access control management function cannot modify the door name.
- A. True
- B. False
Answer: B
NEW QUESTION 96
When the differential pressure switch of the air filter of the indoor unit is closed, it indicates that the filter is too dusty and should be disposed of in time.
- A. True
- B. False
Answer: A
NEW QUESTION 97
The function of the ATS input unit / MCCB input unit of the integrated UPS is ().
- A. Provide branch output of UPS direct supply
- B. Provide dual or single input to the cabinet
- C. Monitor the running status
- D. Provide branch output for direct supply from the mains
Answer: B
NEW QUESTION 98
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 99
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