H12-411_V2.0 HCIA-Data Center Facility V2.0 Questions and Answers

During the construction process, the operation with debris splashing should be used ____________ .

____________ Not part of Huawei's monitoring system NETECO Provide monitoring functions.

In the dynamic environment monitoring system, ____________ is used to indicate the severity of the corresponding fault.

The fastest transmission rate of the following communication interfaces is ____________ .

Low-temperature components can improve the continuous low pressure caused by low-temperature start, so that the air conditioner can start normally.

Lay anti-static floor, wear anti-static shoes and socks to prevent it from forming ____________ .

Common device communication methods are RS232,RS485,FE Wait.

Regarding the description of the data center cooling system, the following ____________ is wrong.

In the low-voltage power distribution system,N The role of the wire is to return the AC operating current.

The following outdoor unit models belong to dual fans are ____________ .

In the main road mode, when ups The front-end voltage is at 220V±10%When fluctuating,ups The output voltage will also have Larger fluctuations.

____________ can complete the conversion from DC to AC.

In the main inverter mode,ups When overloaded, it will switch from the main circuit inverter to the battery inverter mode.

The basic principle of infrared heaters is that infrared rays heat water to boiling, thereby generating steam.

For only having Modbus The power supply and distribution equipment of the agreement can be passed ____________ Connected to the dynamic loop monitoring system.

At the end of the discharge of lead-acid batteries, the voltage drops, and the positive and negative active materials are converted into ____________ .

The user can upgrade the device version in the ____________ interface.

Use RS485 Communication method, the maximum communication distance is ____________ Meter.

UPS The front-end input can be two mains, one main and one standby, or one mains and one diesel engine input.

The function of the fire-fighting system is to automatically capture the smoke or heat in the fire detection area when a fire occurs, so as to issue an audible and visual alarm and automatically extinguish the fire.

The surface cooler controls the indoor temperature and humidity through the heat exchange between the refrigerant and the indoor air.

ABC Circuit breakers are mainly used IT Load front end, such as ups Inside the output cabinet.

Climbing personnel must be equipped with necessary safety belts that meet the safety requirements, and use them correctly and reasonably according to the use regulations, while being supervised.

The general method of connecting lead-acid batteries is to string first and then parallel.

The following are air-cooled row-level air conditioners ____________ .

Use POE When interface, it has two functions of communication and power supply.

The leakage protector is mainly divided into electronic type and electromagnetic type according to the action mode.