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| Section | Weight | Objectives |
|---|---|---|
| Cooling Systems | 18% | - Precision air conditioning - Free cooling technologies - Cooling system design and maintenance |
| Safety and Monitoring Systems | 15% | - Fire protection systems - Environment monitoring - Security and access control |
| DCIM and Management Tools | 24% | - ECC800-Pro Controller - Deployment and configuration - iManager NetEco 6000 - Monitoring, control and optimization |
| Huawei Data Center Facility Solutions | 2% | - Modular deployment strategies - Overall architecture and integrated management |
| Power Supply and UPS Systems | 31% | - FusionPower solutions - UPS2000 series - UPS5000 series - Power distribution and protection |
| Modular Data Center Solutions | 10% | - FusionDC1000A
|
>> H20-923_V1.0 Practice Mock <<
Practice tests (desktop and web-based) are simulations of actual Huawei H20-923_V1.0 PDF Questions designed to help individuals prepare and improve their performance for the Huawei H20-923_V1.0 certification test. ExamCost facilitates the customers with customizable practice tests which means they can adjust the number of questions and set the time of the test according to themselves which will help them in order to feel the real-based exam pressure and control it.
NEW QUESTION # 52
After replacing the fan, choose "Menu > _____ > Performance Maintenance" on the main screen to enter the "Performance Maintenance" screen and clear the accumulated runtime of the indoor fan.
Answer: D
Explanation:
In Huawei room air conditioner and precision cooling unit O&M, fan replacement is treated as a maintenance activity that must be recorded in the controller so lifecycle management remains accurate. The controller tracks accumulated runtime for wear components such as indoor fans to support preventive maintenance planning, alarm thresholds, and performance analysis. After a fan is replaced, the old runtime value must be cleared so the system can correctly measure the new fan's service hours, avoiding premature "maintenance due" prompts or misleading reliability assessments. This function belongs to the maintenance function set rather than alarm viewing, parameter settings, or basic running status. Therefore, the correct navigation is through Menu > Maint > Performance Maintenance, where the technician can locate the indoor fan runtime item and reset/clear it after confirming the replacement. Performing this step ensures consistent O&M records, supports correct maintenance intervals, and helps troubleshooting by aligning future fan- related alarms with the actual operating hours of the newly installed component.
NEW QUESTION # 53
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 # 54
The NetEco supports manual backup and automatic backup.
Answer: B
Explanation:
NetEco is a management platform that stores critical operational data, including site configuration, device models, user/role information, historical alarms, trend data, reports, and northbound integration settings. To protect these assets and ensure service continuity, NetEco provides a built-in backup mechanism that supports both manual and automatic backup modes.
Manual backup is typically used before major operations such as version upgrades, configuration changes, northbound interface adjustments, or large-scale device onboarding, so engineers can create a restore point on demand. Automatic backup is used for routine risk control and is normally implemented through scheduled tasks, allowing backups to be generated at defined intervals to reduce data-loss exposure in case of hardware failure, system corruption, or accidental misconfiguration. In standard O&M practice, automatic backups are combined with retention policies (for example, keeping a rolling set of backup files), storage capacity checks, and periodic restore verification to confirm backup integrity. This dual-mode backup capability is a foundational requirement for stable long-term operation of management systems like NetEco.
NEW QUESTION # 55
During routine maintenance of the lithium battery cabinet, which of the following areas should be protected from electric shocks caused by exposed hands or metal objects?
Answer: A,B,C,D,E
Explanation:
In a lithium battery cabinet, any exposed conductive part that is electrically connected to the DC power path can present shock and arc risk, especially when technicians are using tools in a narrow space. Thegeneral positive/negative terminalsare the cabinet-level high-energy connection points, and accidental contact or bridging with a metal object can cause severe DC arcing, burns, and equipment damage. Thebattery positive and negative terminalson individual modules are also hazardous because each module contributes to the total string voltage and fault current capability. In addition, theshort-circuit copper bar between battery modulesis a direct conductive link in the series/parallel connection; it can be energized and can create an instant short circuit if contacted by tools, jewelry, or loose hardware. Huawei maintenance safety practice therefore requires insulating covers, protective shields, and strict tool control to prevent exposed hands or metal objects from contactinganyof these areas. Protecting all listed points reduces electric shock risk, prevents arc flash/arc burn incidents, and avoids unintended cabinet trips or permanent damage to terminals and busbars.
NEW QUESTION # 56
Which of the following are the functions of the SmartLi 3.0 battery control unit (BCU)?
Answer: A,B,C,D,E,F
Explanation:
In Huawei SmartLi 3.0, the BCU acts as the cabinet-level "brain" of the lithium battery system, coordinating measurement, control, protection, and communication. It manages and supervises BMUs inside the cabinet by collecting key operating data such as voltage, temperature, SOC, and SOH, and by aggregating module information for higher-level management. The BCU supports charge/discharge management by monitoring string current and controlling operating behaviors to keep the battery within safe electrical and thermal limits. To ensure consistent performance across parallel strings and cabinets, it implements intelligent voltage sharing and active current balancing, which helps equalize currents, improve utilization, and reduce uneven aging. For safety and reliability, the BCU provides fault diagnosis and protection, including handling events such as overvoltage, undervoltage, overcurrent, and overtemperature, and it can isolate abnormal loops when required. SmartLi 3.0 also incorporates internal short-circuit risk prediction as part of its safety strategy. Finally, group capacity testing is supported as a maintenance function to verify usable capacity and system health.
NEW QUESTION # 57
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