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| Section | Objectives |
|---|---|
| Data Center Infrastructure Management (DCIM) | - DCIM System Architecture - Monitoring and Alarm Management - Energy Efficiency Management |
| Modular Data Center | - Design, Delivery, and Installation - Huawei FusionModule Series - Modular Data Center Concepts and Benefits |
| 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 - Battery Systems and Reliability - UPS System Principles and Configuration - Power Distribution Unit (PDU) and Power Distribution Architecture |
| Cooling System | - Air-Cooled and Water-Cooled Chillers - Cooling System Architecture and Design - Free Cooling Technologies - In-Row and In-Rack Cooling Units |
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NEW QUESTION # 19
The default port number for logging in to the NetEco is
Answer: C
Explanation:
In Huawei NetEco access design, the Web client is reached usingHTTPSto protect credentials and management data in transit. During initial deployment and commissioning, engineers access the NetEco login page by entering the server IP address followed by thedefault HTTPS service port. Huawei's standard login method specifies that users open a browser and enterhttps://NetEcoserver IP:31943to access the NetEco login interface. This port is therefore treated as the default Web login port in typical on-premises NetEco deployments, and it is the baseline value referenced in installation and login guidance. Other ports may appear in specific tools, customized scenarios, version variants, reverse-proxy deployments, or when security policy requires port changes, but those are exceptions driven by planning or product packaging. For exam and commissioning purposes, the correct default login port is the one used by the NetEco Web client entry point under the standard deployment model:31943.
NEW QUESTION # 20
Which of the following conditions will not cause the wizard startup commissioning to fail?
Answer: C
Explanation:
Wizard startup commissioning is designed to verify that the unit'skey controllable subsystemscan be started, regulated, and protected correctly. Conditions that prevent a subsystem from operating normally will directly cause commissioning failure. If thecondensate pump is stuck, the drainage function cannot be validated and water may accumulate in the drain pan, which is treated as a functional fault during commissioning. Ifindoor fan 2 drive is faulty, the fan system cannot meet airflow requirements or redundancy expectations, so the fan commissioning item fails. If theelectronic expansion valve (EEV) is not opened, refrigerant flow and cooling control cannot be established, so the cooling system commissioning fails because the unit cannot build a stable refrigeration cycle or reach expected operating parameters.
In contrast, thewater leakage ropeis aprotective detection accessoryused for leak sensing and alarming. While it is important for site safety and recommended for operation, its absence typically does not block the unit from completing the functional commissioning steps for fans, cooling, and drainage; it mainly affects leak detection coverage and related alarms rather than the basic startup commissioning pass/fail.
NEW QUESTION # 21
In a data center fire protection design, which approach best matches Huawei facility practice for protecting IT rooms while minimizing secondary damage to IT equipment?
Answer: D
Explanation:
Huawei data center facility design typically follows a layered fire protection concept: early detection, controlled alarm linkage, and suppression methods that protect equipment and ensure personnel safety.
A smoke detection system (often combined with staged alarms) provides early warning so operators can verify events and initiate emergency procedures. For the IT white space, a clean-agent gas extinguishing system is preferred because it suppresses fire without leaving residue and significantly reduces the risk of corrosion or contamination compared with powder-based agents. The extinguishing system is normally integrated with linkage/interlock controls: audible/visual pre-discharge alarms, time delay, emergency abort, door access control logic, and HVAC shutdown or damper control to help maintain agent concentration. This coordinated mechanism reduces false discharge risk while preserving a reliable automatic response if a real fire develops. In contrast, relying only on manual extinguishers is too slow for rapid fire growth, and water sprinklers alone can cause substantial collateral damage to servers and power equipment.
NEW QUESTION # 22
In alarm management, the status can be identified by masking rules.
Answer: A,C
Explanation:
In Huawei alarm management,masking rulesare used to control how alarms are handled and displayed during specific conditions, such as planned maintenance, commissioning, device replacement, or known temporary abnormalities. When a masking rule is applied, the system can change how an alarm is classified so that O&M staff can distinguish between alarms that require immediate action and alarms that are expected or should be excluded from operational statistics. Two key statuses that masking rules can assign areMaintenanceandInvalid.Maintenanceindicates the alarm is generated during an approved maintenance activity (for example, power-off tests, sensor rewiring, cooling maintenance), so it is treated as expected and does not trigger normal escalation logic.Invalidindicates the alarm is not considered effective for operational follow-up-commonly used when a point is confirmed to be non-applicable, temporarily disabled, or its triggering condition is not meaningful to current operations. By contrast,ValidandStandardrepresent normal alarm handling states rather than outcomes specifically "identified by masking rules."
NEW QUESTION # 23
When the mains supply is stable, the UPS5000-H mainly works in which mode after ECO is configured?
Answer: D
Explanation:
After ECO mode is enabled on the UPS5000-H, the system's control objective changes from
"always supply the load through the inverter" to "maximize efficiency while keeping protection mechanisms ready." When the mains input is within the configured ECO acceptance window (voltage, frequency, THD, and other quality thresholds), the UPS supplies the critical load primarily through the static bypass path, which has lower conversion losses than continuous double-conversion. The inverter remains synchronized and on standby, so if the mains quality deteriorates or an abnormal condition is detected, the UPS can rapidly transfer the load back to inverter operation to maintain output stability. Battery mode is only used when the rectifier/bypass source is unavailable or out of range, and maintenance bypass is a manual service path used for isolation during maintenance, not for normal energy-saving operation. Therefore, with stable utility power and ECO configured, the UPS5000-H mainly operates in static bypass mode.
NEW QUESTION # 24
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