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Huawei H12-421-ENU Exam Syllabus Topics:

Huawei Certified Network Professional-Data Center Facility-Build Facility Deployment Optimization Sample Questions:

1. The following air conditioning systems need to be equipped with a cooling tower or dry cooler ().

A) CW air-cooled type
B) DX air-cooled type
C) DX water-cooled type
D) Direct ventilation air conditioning system

2. In the installation scenario where the indoor unit is higher than the outdoor unit, the oil trap must be set.

A) False
B) True

3. Which of the following are the characteristics of Huawei NetCol5000-A row-level precision air conditioner cooling capacity adjustment?

A) Invariable frequency compressor, can't adjust cooling capacity infinitely.
B) When the load is lower than 20%, the electric heating heat compensation is turned on, and the compressor is continuously operated without stopping.
C) DC inverter compressor, which can 20%~100% infinitely adjust cooling capacity.
D) When the load is lower than 30%, the compressor starts and stops frequently, and the valve frequently actions and is easily stuck.

4. If the UPS5000-E-400K is bypassed and the maintenance bypass is closed, both the main power module and the bypass module stop working.

A) False
B) True

5. In the case of normal mains, the UPS battery in inverter mode may be executed ( ). (Multiple choice)

A) Checking the capacity test
B) Shallow discharge test
C) Float charging
D) Balanced charging

Solutions: