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| Section | Objectives |
|---|---|
| Topic 1: Data Center Facility Overview | - Typical Data Center Scenarios and Requirements - Data Center Facility Concepts and Development Trends - Huawei Data Center Facility Solution Portfolio |
| Topic 2: Cooling System | - Cooling System Architecture and Design - Free Cooling Technologies - Air-Cooled and Water-Cooled Chillers - In-Row and In-Rack Cooling Units |
| Topic 3: Data Center Infrastructure Management (DCIM) | - Monitoring and Alarm Management - Energy Efficiency Management - DCIM System Architecture |
| Topic 4: Modular Data Center | - Modular Data Center Concepts and Benefits - Design, Delivery, and Installation - Huawei FusionModule Series |
| Topic 5: Power Supply and Distribution System | - Power Supply and Distribution System Architecture - Power Distribution Unit (PDU) and Power Distribution Architecture - Battery Systems and Reliability - UPS System Principles and Configuration |
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NEW QUESTION # 37
After installing the FusionCol8000-C (110-440 kW), inject water to preserve the pressure for the chilled water pipes to how many MPa. After 30 minutes, check that no leakage occurs. Preserve the pressure for 24 hours. If the pressure drop is less than 0.01 MPa and no leakage occurs, the pipes do not leak.
Answer: A
Explanation:
For FusionCol8000-C chilled-water systems, Huawei commissioning requires awater leakage/pressure- holding teston the chilled-water piping after installation to verify joint sealing, valve interfaces, and connection integrity before long-term operation. The specified method is toraise the water pressure in the chilled-water pipe to 0.8 MPa, then observe for30 minutesto confirm there is no visible leakage. If the system remains dry, the same pressure isretained for 24 hoursas a stability verification step. The acceptance criterion is that thepressure drop is less than 0.01 MPaover the 24-hour period and no leakage is found, which demonstrates that the piping and fittings meet tightness requirements under the prescribed test pressure. This procedure helps prevent future failures such as slow seepage, corrosion around joints, insulation waterlogging, and unexpected shutdowns caused by water loss or low differential pressure alarms. It also ensures that subsequent flushing, venting, and operational commissioning can be performed safely and reliably.
NEW QUESTION # 38
The software installation package does not need to be downloaded for the preinstalled server.
Answer: B
Explanation:
In Huawei delivery scenarios, a preinstalled server means the target software (for example, the NetEco platform and its required runtime components) has already been deployed and integrated on the server image before it is handed over for on-site commissioning. Because the installation media has already been applied, the on-site engineer's work typically shifts from "software installation" to "environment verification and initialization," such as confirming OS/service status, checking resource allocation, validating database and middleware health, verifying network planning (IP, gateway, DNS/NTP as required), and completing application-level initialization (site creation, user/role configuration, northbound interface settings, and device/model import if needed). In this case, downloading the full installation package is not a mandatory step for commissioning, because the package is mainly required when performing a fresh installation or reinstall/upgrade. However, standard practice is still to prepare supporting materials (patches, licenses, and compatibility documents) and ensure the preinstalled version matches the project baseline before acceptance.
NEW QUESTION # 39
Why is early smoke detection (e.g., VESDA-type aspirating smoke detection) preferred in high- value data center environments over standard point smoke detectors?
Answer: C
Explanation:
Aspirating smoke detection systems actively draw air samples through a network of pipes to sensitive detection chambers, identifying smoke particles at very low concentrations far earlier than standard point detectors, allowing intervention before a fire fully develops.
NEW QUESTION # 40
The frequency of power supply equipment can be 50 Hz, 60 Hz, or 70 Hz.
Answer: A
Explanation:
In data center power systems, the utility grid frequency standard iseither 50 Hz or 60 Hz, depending on the country/region. Data center facility equipment-such as UPS systems, power distribution units, switchgear, and monitoring components-is designed to operate reliably under these standardized grid frequencies, with acceptable tolerance ranges around the nominal value. While some power conversion equipment can adapt between50/60 Hz(for example, via frequency tracking or double-conversion),70 Hz is not a standard utility frequencyused for data center facility power supply, and it is not treated as a normal operating frequency in typical design, acceptance testing, or O&M procedures. From an operations perspective, maintaining correct frequency is critical because abnormal frequency can trigger UPS transfer logic, increase losses, create synchronization issues with bypass sources, and negatively affect downstream IT loads. Therefore, stating that power supply equipment frequency "can be 50 Hz, 60 Hz, or 70 Hz" is incorrect for standard data center infrastructure practice.
NEW QUESTION # 41
After the battery module is installed, the torque and insulation should be checked according to the specified requirements.
Answer: B
Explanation:
This statement is true because post-installation verification is a mandatory acceptance step for battery systems in data centers. After a battery module is installed, torque verification ensures that all power terminals, interconnect bars, and grounding points meet the specified tightening requirements. If torque is too low, contact resistance increases, which can cause abnormal heating, voltage drop, nuisance alarms, and even connector damage during high current charge/discharge. If torque is too high, threads, lugs, or busbars can be damaged, creating hidden reliability risks. Insulation testing confirms that the battery circuit has no unintended leakage paths to chassis or ground and that cable routing, connector seating, and protective covers are correct. This is especially important for lithium battery cabinets where high DC voltage and large fault current capability demand strict electrical isolation. Performing torque and insulation checks after installation reduces early-life faults, improves safety, and ensures the cabinet can pass commissioning tests and enter stable service under UPS charge/discharge control.
NEW QUESTION # 42
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