Huawei Certified Network Professional-Data Center Facility-Build Facility Deployment Optimization : H12-421-ENU

  • Exam Code: H12-421-ENU
  • Exam Name: Huawei Certified Network Professional-Data Center Facility-Build Facility Deployment Optimization
  • Updated: Sep 14, 2026     Q & A: 240 Questions and Answers

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Huawei H12-421-ENU Exam Syllabus Topics:

SectionObjectives
Topic 1: Power and Cooling Systems- Infrastructure optimization
  • 1. UPS and power distribution
    • 2. Cooling system design and efficiency
      Topic 2: Operation and Maintenance- Maintenance and troubleshooting
      • 1. Fault diagnosis
        • 2. Routine inspection procedures
          Topic 3: Safety and Compliance- Operational safety standards
          • 1. Environmental compliance requirements
            • 2. Electrical safety rules
              Topic 4: Data Center Facility Overview- Data center infrastructure fundamentals
              • 1. Architecture principles
                • 2. Facility components overview
                  Topic 5: Deployment and Installation- Facility deployment process
                  • 1. Cabinet and cabling layout
                    • 2. Equipment installation standards
                      Topic 6: Planning and Design- Deployment planning
                      • 1. Site selection considerations
                        • 2. Capacity planning basics

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

                          Question #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
                          Reveal Solution  Discussion  0

                          Correct Answer: C  🗳️

                          Question #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
                          Reveal Solution  Discussion  0

                          Correct Answer: A  🗳️

                          Question #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.
                          Reveal Solution  Discussion  0

                          Correct Answer: B,C  🗳️

                          Question #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
                          Reveal Solution  Discussion  0

                          Correct Answer: A  🗳️

                          Question #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
                          Reveal Solution  Discussion  0

                          Correct Answer: A,B,C,D  🗳️

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