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Huawei Certification
H20-923_V1.0 Exam
Huawei.H20-923_V1.0.v2026-06-29.q20 Dumps

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Question 16

The default port number for logging in to the NetEco is

A.32804
B.32805
C.31943
D.31945

Correct Answer: C

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.

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Question 17

When a critical alarm is generated in a lithium battery cabinet and the buzzer beeps continuously, the status of the indicator on the MDU is

A.Blinking yellow fast
B.Steady yellow
C.Blinking red fast
D.Steady red

Correct Answer: C

In Huawei lithium battery cabinet alarm design, the MDU indicator and buzzer are coordinated to help O&M personnel immediately judge alarm severity without logging into a management system. Acritical alarmindicates that the battery system may no longer be in a fully safe or supported operating state and requires urgent handling, such as load protection actions, isolation, or immediate inspection. For this highest severity level, the cabinet uses the most prominent visual pattern:red with fast blinking, paired with acontinuous buzzer, to ensure the condition cannot be overlooked in an equipment room environment. Yellow indicators are reserved for lower severities such as warnings or minor/major alarms, where the system remains controllable and the required response can be scheduled. A steady red is typically used to indicate a persistent fault state or stop condition, whereasfast blinking red + continuous buzzeris the clear "critical, urgent" combination that triggers immediate on-site response and rapid fault localization (such as checking protection events, contactor status, temperature/voltage exceptions, and isolation conditions).

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Question 18

Huawei-developed intelligent rPDU (PDU2000M) can replace the original UIM20A expansion module. The rPDU can connect to the cabinet temperature/humidity sensors, smart U space managers, and door status sensors.

A.True
B.False

Correct Answer: A

In Huawei smart module monitoring architecture, theUIM20A expansion moduleis traditionally used toincrease device portsso cabinets can connect multiple intelligent components and sensors (for example, door status and environmental sensors). Huawei also provides theintelligent rPDU PDU2000M, whosemain control moduleincludes communications and DI interfaces designed to directly##cabinet-level intelligent devices for centralized monitoring and management. In Huawei's solution description for rPDU-monitoring networking, thePDU2000M is positioned to replace the expansion-module role, meaning that in applicable scenarios, cabinets can connect monitoring devices through the PDU2000M without deploying an additional UIM20A expansion module. This supports practical connections such asT/H sensors,smart U space managers, anddoor status/door-access related signalsthrough the PDU2000M interfaces, and then these devices are managed
/bound in the controller's smart module view. Huawei O&M guidance also emphasizes avoiding duplicate connections (do not connect the same device to both UIM20A and PDU2000M), aligning with the replacement concept. (Scribd)

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Question 19

Which of the following control modes can be used for temperature and humidity control of smart cooling products?

A.Cold aisle
B.Supply air
C.Return air
D.Hot aisle

Correct Answer: A,B,C

Smart cooling temperature and humidity control is based on where the control "reference point" is measured and regulated.Supply air controluses the unit outlet sensor as the main reference, so the system directly regulates the temperature (and humidity when configured) of the air delivered to the IT area. This provides stable supply conditions and is widely used for predictable airflow organization.Return air controluses the unit inlet/return sensor as the reference, reflecting the heat absorbed from IT loads; it helps the unit respond to real load changes and maintain stable operation when room mixing or load distribution varies.Cold aisle controluses sensors placed in the cold aisle (near rack inlets) as the reference, aligning control with the most critical point for IT reliability-server intake conditions-especially in contained aisle scenarios.Hot aisleis generally not used as a primary temperature-and-humidity control mode because hot aisle conditions are intentionally high and variable (driven by load and containment), and controlling to hot aisle targets can conflict with ensuring stable rack inlet temperature and proper dehumidification behavior. Therefore, A, B, and C are valid control modes.

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Question 20

Which layout principle best aligns with Huawei data center facility design for improving cooling efficiency and reducing mixing of hot and cold air?

A.Distribute racks randomly to balance floor loading
B.Implement hot aisle/cold aisle arrangement with aisle containment
C.Place CRAC/CRAH units only along the perimeter without airflow planning
D.Keep all cabinet doors open to minimize local hotspots

Correct Answer: B

Huawei data center facility design emphasizes controlling airflow paths to raise cooling efficiency and stabilize IT inlet temperatures. The hot aisle/cold aisle layout creates a predictable airflow direction:
cold air is supplied to the front of IT racks (cold aisle), while hot exhaust air is isolated and returned to the cooling system (hot aisle). When aisle containment is added, it prevents hot and cold air from mixing, which directly improves cooling utilization, reduces overcooling demand, and lowers fan energy. This layout also supports more accurate temperature control, enabling higher supply air temperatures while still meeting server inlet requirements-an important lever for improving overall energy efficiency. Huawei modular and smart module concepts commonly standardize rack alignment, containment components, and sensor-based monitoring so the airflow system remains consistent as capacity scales. Compared with random rack placement or uncontrolled airflow, containment-based hot
/cold aisle planning delivers measurable operational stability, simpler troubleshooting, and better conditions for capacity expansion without redesigning the entire cooling path.

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