H12-411 Practice Exam Tests Latest Updated on Dec-2021
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Huawei H12-411 Exam Syllabus Topics:
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NEW QUESTION 29
Which of the following is not belongs to the monitoring function provided by Huawei NetEco.
- A. software upgrade
- B. Access monitoring
- C. Real-time signal
- D. Current alarm
Answer: A
NEW QUESTION 30
Huawei NetEco monitoring system must not support the monitoring of third-party devices.
- A. False
- B. True
Answer: A
NEW QUESTION 31
UPS can clean electricity input, output stable exchange, to protect the load
- A. False
- B. True
Answer: B
NEW QUESTION 32
When the load is 60KW, the capacity of each UPs is 100KVA, the power factor is 0.95, when the system must be redundancy configuration, how many UPS does it need at least?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 33
Which fire extinguishing agent is mainly used in data center fire protection system?
- A. Halon 1301
- B. Haloalkanes
- C. water
- D. Heptafluoropropane
Answer: D
NEW QUESTION 34
The following () air supply methods are mainly applicable to the craft air conditioners in lower work area where there is a large amount of waste heat to be taken away.
- A. middle air-supply
- B. bottom supply and bottom return
- C. bottom supply and upper return
- D. upper supply and bottom return
Answer: C
NEW QUESTION 35
The closer the PUE value is to (), indicates that the better the data center energy efficiency status is.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 36
According to the concentration degree of equipment, air conditioning system can be divided into (). (Multiple choice)
- A. decentralized
- B. Semi-centralized
- C. Centralized
- D. Mixed
Answer: A,B,C
NEW QUESTION 37
When mains input range of voltage: 150-260VAC, frequency: 45-60HZ, which of the following UPS working range can work in the main inverter state?
- A. Input range: 180 - 240V, 40 - 70HZ
- B. Input range: 110 - 280V, 40 - 70HZ
- C. Input range: 160 - 280V, 45 - 65HZ
- D. Input range: 180 - 240V, 45 - 55HZ
Answer: B
NEW QUESTION 38
Huawei NetEco can not provide SNMP (Simple Network Management Protocol) to third-party NMSs.
- A. False
- B. True
Answer: A
NEW QUESTION 39
Which of the following options do not qualify as direct expansion air-cooled air conditioners?
- A. can not be installed over long distances, or large loss of refrigeration
- B. Refrigeration energy efficiency is relatively low
- C. Simple structure, easy installation, low cost
- D. Installation distance is unlimited
Answer: D
NEW QUESTION 40
When using PoE (Power over Ethernet) interface, it has two functions: communication and power supply.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 41
Compared with the comfort air conditioning, what are the advantages of the equipment room dedicated air conditioning?
- A. the year refrigeration
- B. more accurate temperature and humidity control
- C. big air volume, little enthalpy difference
- D. high sensible heat ratio
Answer: A,B,C,D
NEW QUESTION 42
Through check (), the user can understand the operation of the equipment.
- A. Real-time signal
- B. Device version
- C. Operation log
D Asset Management
Answer: C
NEW QUESTION 43
MCB circuit breaker can be divided into B, C, D, Z, K class according to different tripping characteristics. For IT loads, the () level tripping characteristics should be used.
- A. D
- B. B
- C. C
- D. Z
Answer: C
NEW QUESTION 44
ATS Dual Power Automatic Transfer Switch can achieve the switching of two-way power's fast loading machine.
- A. False
- B. True
Answer: B
NEW QUESTION 45
Battery slot of lead-acid battery is used to hold the electrolyte; plates, partitions, and so on.
- A. False
- B. True
Answer: B
NEW QUESTION 46
Leakage protection by the action mode is mainly divided into electronic and electromagnetic.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION 47
What should be used during construction when low-voltage live working(below 1kV)? (Multiple choice)
- A. Insulation service
- B. Insulating shoes
- C. Helmets
- D. Insulation gloves
Answer: A,B,D
NEW QUESTION 48
There are three different categories of earthing (TN, TT and IT) in low voltage distribution systems. What does the first letters represent?
- A. Indicates the relationship of the power system to the exposed conductive parts of the power receiving system
- B. Indicates power receiving system exposed conductive parts and the relationship between the ground
- C. Indicates the relationship between neutral N and protective earth PE
- D. Indicates the power system on the ground
Answer: D
NEW QUESTION 49
() is a fire detector that detects smoke particles.
- A. temperature detector
B VESDA - B. sound and light alarm
- C. Smoke detector
Answer: B
NEW QUESTION 50
Which of the following outdoor modles belongs to double fan?
- A. NetCol500-A038
- B. NetCol500-A032
- C. NetCol500-A072
- D. NetCol500-A026
Answer: C
NEW QUESTION 51
High sensible heat ratio is the only difference between a precision air conditioner and a residential air conditioner.
- A. False
- B. True
Answer: A
NEW QUESTION 52
What kind of refrigerant does Huawei precision air conditioner use?
- A. R13
- B. R22
- C. R410A
- D. R407C
Answer: C
NEW QUESTION 53
Use RS485 communication, the maximum communication distance are () meters.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION 54
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