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| Section | Objectives |
|---|---|
| Data Center Facility Overview | - Typical Data Center Scenarios and Requirements - Data Center Facility Concepts and Development Trends - Huawei Data Center Facility Solution Portfolio |
| Power Supply and Distribution System | - Power Supply and Distribution System Architecture - UPS System Principles and Configuration - Battery Systems and Reliability - Power Distribution Unit (PDU) and Power Distribution Architecture |
| Data Center Infrastructure Management (DCIM) | - DCIM System Architecture - Energy Efficiency Management - Monitoring and Alarm Management |
| Cooling System | - Cooling System Architecture and Design - Air-Cooled and Water-Cooled Chillers - Free Cooling Technologies - In-Row and In-Rack Cooling Units |
| Modular Data Center | - Design, Delivery, and Installation - Modular Data Center Concepts and Benefits - Huawei FusionModule Series |
>> H20-923_V1.0 Certification Sample Questions <<
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NEW QUESTION # 74
Which of the following is the procedure for replacing a damaged UPS power module onsite?
Answer: A
Explanation:
For onsite replacement of a UPS power module, Huawei's maintenance logic follows a safe
"isolate remove insert re-enable" sequence controlled by the module ready switch. During removal, the ready switch must be rotated to the OFF state first so the module is logically isolated from operation and will not participate in power conversion. After isolation, the four fixing screws are removed and a short waiting period is required to allow internal energy in capacitors to discharge before the module is pulled out. This matches statement . During installation, the ready switch must remain OFF before insertion to prevent unintended startup or arcing during connector engagement. The module is placed in position, inserted slowly and evenly until fully seated, then secured with the four screws. Only after mechanical fastening and full seating is confirmed should the ready switch be rotated to the ON state to allow the system to recognize and bring the module online. This matches statement .
NEW QUESTION # 75
In a data center power distribution architecture, what is the primary function of a Static Transfer Switch (STS) for critical single-cord loads?
Answer: B
Explanation:
Huawei data center power distribution design prioritizes continuity for critical loads. For single- cord IT equipment that cannot accept dual inputs, an STS provides a practical high-availability approach by connecting the load to two independent AC sources (often A and B feeds) and transferring the load to the healthier source when abnormalities occur. The key value is speed and coordination: the STS detects voltage/frequency deviations or source failure and performs a rapid transfer to minimize or eliminate interruption seen by the load. This supports O&M strategies where upstream systems (UPS, PDUs, distribution boards) are maintained or isolated without forcing downtime on single-cord devices. In routine operations, STS status, transfer logs, alarms, and source quality parameters are monitored to prevent nuisance transfers and to ensure correct upstream selectivity and grounding. Correct commissioning also ensures the two sources meet synchronization conditions and that bypass/maintenance procedures are standardized, improving safety and reducing operational risk.
NEW QUESTION # 76
Which of the following are the user roles of Power Partner?
Answer: A,B,C,D,E,F
Explanation:
Power Partner is Huawei Digital Power's partner service platform used to support delivery, commissioning, maintenance, and service operations across the full lifecycle of a project. To match real project workflows, the platform defines multiple user roles that align with different responsibilities and permission scopes. AStartup engineerfocuses on commissioning activities such as obtaining startup authorization, performing initial configuration, and completing functional verification. AService engineerhandles routine maintenance, inspections, troubleshooting, part replacement guidance, and closure of service cases. AProject managercoordinates delivery milestones, resource planning, and overall service execution to ensure acceptance criteria are met. AnInventory operations managermanages materials/parts flow, tracking, and availability to support timely repair and maintenance. TheDOC (Delivery/Dispatch Operations Center)role supports centralized operations such as work order dispatching, progress supervision, and process compliance.
Aservice manager of a representative officetypically oversees regional service quality, governance, and authorization control, ensuring the right people have the right access and that services are delivered according to Huawei process requirements.
NEW QUESTION # 77
Which layout principle best aligns with Huawei data center facility design for improving cooling efficiency and reducing mixing of hot and cold air?
Answer: C
Explanation:
Huawei data center facility design emphasizes controlling airflow paths to raise cooling efficiency and stabilize IT inlet temperatures. The hot aisle/cold aisle layout creates a predictable airflow direction: cold air is supplied to the front of IT racks (cold aisle), while hot exhaust air is isolated and returned to the cooling system (hot aisle). When aisle containment is added, it prevents hot and cold air from mixing, which directly improves cooling utilization, reduces overcooling demand, and lowers fan energy. This layout also supports more accurate temperature control, enabling higher supply air temperatures while still meeting server inlet requirements--an important lever for improving overall energy efficiency. Huawei modular and smart module concepts commonly standardize rack alignment, containment components, and sensor-based monitoring so the airflow system remains consistent as capacity scales. Compared with random rack placement or uncontrolled airflow, containment-based hot/cold aisle planning delivers measurable operational stability, simpler troubleshooting, and better conditions for capacity expansion without redesigning the entire cooling path.
NEW QUESTION # 78
When a critical alarm is generated in a lithium battery cabinet and the buzzer beeps continuously, the status of the indicator on the MDU is
Answer: D
Explanation:
In Huawei lithium battery cabinet alarm design, the MDU indicator and buzzer are coordinated to help O&M personnel immediately judge alarm severity without logging into a management system. Acritical alarmindicates that the battery system may no longer be in a fully safe or supported operating state and requires urgent handling, such as load protection actions, isolation, or immediate inspection. For this highest severity level, the cabinet uses the most prominent visual pattern:red with fast blinking, paired with acontinuous buzzer, to ensure the condition cannot be overlooked in an equipment room environment. Yellow indicators are reserved for lower severities such as warnings or minor/major alarms, where the system remains controllable and the required response can be scheduled. A steady red is typically used to indicate a persistent fault state or stop condition, whereasfast blinking red + continuous buzzeris the clear "critical, urgent" combination that triggers immediate on-site response and rapid fault localization (such as checking protection events, contactor status, temperature/voltage exceptions, and isolation conditions).
NEW QUESTION # 79
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