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| Section | Objectives |
|---|---|
| Topic 1: Cooling System | - In-Row and In-Rack Cooling Units - Air-Cooled and Water-Cooled Chillers - Free Cooling Technologies - Cooling System Architecture and Design |
| Topic 2: Data Center Facility Overview | - Typical Data Center Scenarios and Requirements - Data Center Facility Concepts and Development Trends - Huawei Data Center Facility Solution Portfolio |
| Topic 3: Power Supply and Distribution System | - Battery Systems and Reliability - Power Supply and Distribution System Architecture - UPS System Principles and Configuration - Power Distribution Unit (PDU) and Power Distribution Architecture |
| Topic 4: Data Center Infrastructure Management (DCIM) | - Energy Efficiency Management - DCIM System Architecture - Monitoring and Alarm Management |
| Topic 5: Modular Data Center | - Design, Delivery, and Installation - Modular Data Center Concepts and Benefits - Huawei FusionModule Series |
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NEW QUESTION # 63
In contrast to N+1, what does 2N redundancy architecture provide?
Answer: D
Explanation:
2N redundancy duplicates the entire system (e.g., two independent UPS/cooling paths), each fully capable of supporting the total load, providing a higher level of fault tolerance than N+1 but typically at higher cost.
NEW QUESTION # 64
Through device management, you can view the information about
Answer: A,B,C,D
Explanation:
In Huawei smart module management (such as on the ECC800-Pro/WebUI),Device Managementis used to centrally view and maintain managed objects (UPS, SmartLi, rPDU, sensors, air conditioners, etc.).
TheOverviewpage provides a consolidated snapshot of a device's operating status, key parameters, running mode, and basic identification information so engineers can quickly judge whether the device is healthy and online. TheAlarmview lists active and historical alarms related to the device, supporting rapid fault isolation and verification after recovery. TheSignalview shows monitoring points and I/O status (including analog values and digital inputs/outputs where applicable), which helps engineers confirm sensor wiring, linkage logic, and real-time state changes during commissioning and troubleshooting. TheService periodinformation is used for lifecycle and maintenance planning, such as tracking service time, maintenance intervals, or component life indicators where supported, enabling preventive maintenance and reducing unexpected downtime. Therefore, Device Management supports viewing all four categories.
NEW QUESTION # 65
Which of the following statements is false about the advantages of the free cooling solution for data centers?
Answer: B
Explanation:
Free cooling is a mainstream energy-saving concept in data center cooling design, used to reduce chiller compressor runtime by leveraging low outdoor temperatures (air-side) or low cooling-water temperatures (water-side) during suitable seasons. Therefore, describing the technology as "not mature enough and should be used with caution" is the false statement when discussing its advantages. In practice, free cooling has broad industry adoption and is considered a proven approach when applied with correct engineering, such as proper filtration, anti-condensation control, heat exchanger selection, and automatic control strategies. Its advantage is that it can directly utilize the outdoor "cold source" to remove heat, which significantly reduces cooling power consumption compared with full mechanical refrigeration, improving overall energy efficiency and supporting lower PUE targets. It also makes full use of seasonal and day-night temperature differences: the system dynamically switches among free cooling, partial free cooling, and mechanical cooling to balance reliability and efficiency. The key point is maturity: the benefit of free cooling comes from well-established principles and widely implemented architectures, not experimental technology.
NEW QUESTION # 66
Which of the following best describes the function of a Power Distribution Unit (PDU) in a smart cabinet?
Answer: D
Explanation:
A PDU distributes power to rack-mounted devices; an intelligent/smart rPDU additionally provides monitoring capabilities (voltage, current, load per outlet) and can integrate with the facility monitoring system.
NEW QUESTION # 67
When tightening the screws (M16x50 mm) for the output power cables of lithium battery cabinets, what torque should be used to tighten and verify the screws?
Answer: D
Explanation:
For Huawei SmartLi lithium battery cabinets, the output power cable termination uses high-current DC conductors, so the mechanical fastening torque is strictly specified to ensure both safety and long-term reliability. ForM16x50 mm screwsused on the+/N/# output cable terminals, the specified tightening
/verification torque is120 N m. This torque requirement is defined to achieve the correct clamping force between the DT terminal lug and the cabinet busbar/terminal surface. If the torque is below the requirement, contact resistance increases, which can lead to abnormal heating during charge/discharge, voltage drop, alarm events, and accelerated oxidation at the joint. If the torque is excessive, it can damage threads, deform the lug or busbar contact area, and introduce hidden mechanical stress that may loosen over thermal cycles. During commissioning and routine maintenance, technicians use a calibrated torque wrench to tighten and then re- verify each connection to the specified value to prevent hotspots and ensure stable operation under peak current conditions.
NEW QUESTION # 68
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