Pass Your Huawei Exam with H12-421-ENU Exam Dumps (Updated 240 Questions)
H12-421-ENU Exam Dumps - Huawei Practice Test Questions
NEW QUESTION 21
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 22
On the NetEco interface, a modular can only bind () ECC800 devices.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 23
What are the access control type of the micro module? (Multiple Choice)
- A. Password swipe access control machine
- B. Fingerprint password swipe access control machine
- C. Face recognition access control
- D. Fingerprint swipe access control machine
Answer: A,B,D
NEW QUESTION 24
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 25
If the UPS5000-E-400kVA is equipped with an IP21 component, the top outlet is not supported.
- A. False
- B. True
Answer: B
NEW QUESTION 26
When the ECC800 detects that the connection signal to the device is interrupted, a communication interruption alarm is generated. What are the possible reasons? (Multiple choice)
- A. Cable connection is loose
- B. Equipment failure
- C. Poor cable contact
- D. Power supply is not normal
Answer: A,B,C,D
NEW QUESTION 27
Which part of the data center design is currently affecting its PUE?
- A. Building system
- B. Power supply and distribution system
- C. Refrigeration system
- D. Decoration system
Answer: C
NEW QUESTION 28
The sunroof actuator can control the flip sunroof of the modular data center closed channel.
- A. False
- B. True
Answer: B
NEW QUESTION 29
The cycle life of the battery is direct proportional to the depth of discharge.
- A. False
- B. True
Answer: A
NEW QUESTION 30
The PDU8000 intelligent power meter parameter display is abnormal, which may be caused by (). (Multiple choice)
- A. Intelligent power meter failure
- B. Electricity or voltage ratio setting error
- C. Corresponding current transformer failure
- D. The corresponding voltage collection line is abnormal.
Answer: A,B,C,D
NEW QUESTION 31
Huawei NetCol5000-A line-level precision air conditioner mainly solves the hot issue of high-density data center.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 32
When installing the power line on the UPS5000-E, if there are different sources on the main-lines and bypass, you need to remove the copper bars connected to the bypass and main lines first, and then connect the main circuit and bypass input respectively.
- A. False
- B. True
Answer: B
NEW QUESTION 33
When connecting the refrigerant pipe, to prevent the pipe from being oxidized, it is necessary to introduce a small amount of nitrogen gas during welding.
- A. False
- B. True
Answer: B
NEW QUESTION 34
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 35
When the Huawei air-cooled air-conditioning compressor is turned on for the first time, the crankcase heating belt needs to be warmed up for more than ( ) hours.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION 36
The user can modify the ECC800's IP address from the () menu of the ECC800 Web interface.
- A. Monitoring module IP
- B. Time setting
- C. Video IP settings
- D. Emblem module settings
Answer: A
NEW QUESTION 37
When inspecting, maintaining and repairing electrical equipment in non-blackout mode, a warning sign or signage should be placed on the electrical installation and work area.
- A. False
- B. True
Answer: B
NEW QUESTION 38
What does the gas fire extinguishing system startup principle include? (Multiple choice)
- A. Automatic start
- B. Safe start
- C. Emergency start
- D. Manual start
Answer: A,C,D
NEW QUESTION 39
When a fire occurs in the FusionModule1000 box, the deflation indicator will show the words "Don't put in" to warn the site personnel not to enter the deflation zone.
- A. False
- B. True
Answer: B
NEW QUESTION 40
The wheel patrol function is enabled to interchange the running machine and the standby machine, thereby increasing the average life.
- A. False
- B. True
Answer: B
NEW QUESTION 41
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