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| Section | Weight | Objectives |
|---|---|---|
| Cooling Systems | 18% | - Precision air conditioning - Free cooling technologies - Cooling system design and maintenance |
| Huawei Data Center Facility Solutions | 2% | - Modular deployment strategies - Overall architecture and integrated management |
| Safety and Monitoring Systems | 15% | - Security and access control - Environment monitoring - Fire protection systems |
| Power Supply and UPS Systems | 31% | - UPS5000 series - Power distribution and protection - FusionPower solutions - UPS2000 series |
| DCIM and Management Tools | 24% | - Monitoring, control and optimization - iManager NetEco 6000 - Deployment and configuration - ECC800-Pro Controller |
| Modular Data Center Solutions | 10% | - FusionModule2000
|
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NEW QUESTION # 48
What is the purpose of a battery management system (BMS) in a lithium-ion battery-based UPS backup?
Answer: D
Explanation:
A BMS continuously monitors individual cell parameters (voltage, temperature, state of charge/health) in lithium-ion battery packs, balancing cells and triggering protective actions to prevent unsafe conditions such as overcharging, overheating, or thermal runaway.
NEW QUESTION # 49
The default address of the WAN1 port on the ECC800-Pro is
Answer: C
Explanation:
In Huawei smart module commissioning, the ECC800-Pro controller provides a dedicated management access path through its WAN ports. For on-site startup commissioning, technicians typically connect a laptop directly toWAN1and place the laptop IP address in the same subnet as the controller so they can open the WebUI and complete initial settings (time, network, device discovery, alarm checks, linkage tests, and parameter commissioning). Thefactory default IP address for WAN1 is 192.168.8.10, which is used as the initial access point before the address is planned and changed to match the customer's management network. This default design supports quick "point-to-point" commissioning without depending on upstream switches, DHCP services, or enterprise IP planning at the very beginning of deployment. After login, Huawei commissioning practice is to harden access (password/authentication completion), then update network parameters and integrate the ECC800-Pro into the site monitoring network to enable continuous O&M, remote alarm reporting, and device management.
NEW QUESTION # 50
After the unit is powered on for the first time, it enters the compressor preheating state. To quickly perform power-on commissioning, you can manually shut down the compressor preheating.
Answer: A
Explanation:
Compressor preheating is a protection mechanism used during first power-on (and after long power-off periods) to improve compressor reliability before allowing refrigeration startup. The preheating function warms the compressor oil and reduces refrigerant migration and oil dilution, which otherwise can lead to liquid refrigerant in the compressor crankcase. If the compressor starts when oil is diluted or when liquid refrigerant is present, it increases the risk of abnormal noise, poor lubrication, high mechanical stress, and even liquid strike, which can damage the compressor and shorten service life. For data center cooling equipment, where continuous reliability is essential, the commissioning logic treats preheating as a required prerequisite for safe compressor operation. Therefore, O&M practice does not recommend bypassing or manually shutting down compressor preheating just to accelerate commissioning. The correct approach is to keep the unit energized and allow the preheating period to complete, then proceed with commissioning steps (fans, cooling system tests, alarms, and control verification) under proper protection conditions.
NEW QUESTION # 51
Which of the following is the cabling mode of external power cables in IT scenarios of the FusionDC1000A?
Answer: B
Explanation:
In the FusionDC1000A IT scenario, the external input power cables are designed to enter the power distribution system throughdedicated cable inlets at the bottomof the Power PDB. During installation, the procedure requires opening the Power PDB, removing the plugs from thebottom cable holes, and routing the external input power cables into the cabinet through these bottom entries before arranging them along the nearby cable support/bridge inside the Power PDB area. After the cables are terminated (for example, L1/L2
/L3/N and PE), the bottom cable entries are resealed using waterproof sealing materials to maintain enclosure protection performance. This bottom-entry method supports reliable mechanical routing for thick/armored power cables, reduces bending stress, helps maintain orderly segregation from signal cabling, and improves on-site safety by guiding high-current cables through a controlled inlet path. Therefore, the correct cabling mode for external power cables in FusionDC1000A IT scenarios isbottom cabling.
NEW QUESTION # 52
Which of the following statements are true about the industry trend of the data center cooling systems?
Answer: B,C,D
Explanation:
As data center power density increases (especially driven by AI and high-performance computing), the industry trend is to adoptliquid coolingin high-density scenarios because liquid has much higher heat transfer capability than air, enabling stable cooling where rack power is very high. This makes statementAtrue. The combination ofCloud + AIpushes operators to reduce PUE and total energy cost through more intelligent control, higher efficiency cooling architectures, and integrated energy management, so statementBis also true.
For large data centers, another clear trend is increasingchilled-water supply/return temperatures(higher inlet and outlet temperatures). Warmer water improves chiller efficiency, expands the number of hours that free cooling can be used, and reduces compressor work, soDis true. However,evaporative coolingis not universally the "main solution" for large data centers because it is climate- and water-condition dependent and is typically deployed as one option among multiple architectures rather than the dominant default everywhere. Therefore, Cis the incorrect statement.
NEW QUESTION # 53
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