Release Huawei certification H12-411-ENU practice test pdf

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Share some HCNA-DCF H12-411-ENU exam questions and answers below.
UPS inverter components can achieve the conversion from AC to DC. 
A. True 
B. False

Which fire extinguishing agent is mainly used in data center fire protection system? 
A. Heptafluoropropane 
B. water 
C. Haloalkanes 
D. Halon 1301 
Answer: A

The type of compressor used by Huawei air-cooled precision air conditioner is ( ). 
A. Screw type 
B. Centrifugal 
C. Scroll 
D. Reciprocating 
Answer: C

Which of the following communication interface transfer rate is the fastest? 
A. RS232 
B. RS422 
C. RS485 
D. FE 
Answer: D

Compressor is the heart of the refrigeration cycle, is the power plant of the refrigerant in the system inner loop, the low temperature and low pressure steam from the evaporator is compressed into high temperature and pressure steam. 
A. True 
B. False 
Answer: A

Battery slot of lead-acid battery is used to hold the electrolyte, plates, partitions, and so on. 
A. True 
B. False 
Answer: A

In low-voltage power distribution systems, the role of the PE line is to provide a return path for the fault current in the event of a power system failure. 
A. True 
B. False 
Answer: A

When using the PoE (Power over Ethernet) interface, there are two functions of passing and supplying power. 
A. True 
B. False 
Answer: A

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