H12-411-ENU HCNA-Data Center Facility V1.0 exam questions online

1. Lay anti-static floor, put on anti-static shoes and socks to prevent the formation of ( ).

2. At present, the communication methods used by the Dynamic environment monitoring system are ( ). (Multiple choice)

3. At present, batteries are installed in data centers mainly in rack-mounted and tank-mounted installations.

4. ( ) is a fire detector that detects smoke particles.

5. The function of the following ( ) parts is to help with oil return.

6. The following ( ) options belong to water-cooled chilled water air conditioners. (Multiple choice)

7. When AC power equipment are introduced in by using three-phase four-wire system, in addition to the zero line on the near side of the power transformer grounding, electrical equipment and the engine room should be near the ground repeatedly.

8. In Main Inverter mode, the UPS will switch from Main Inverter mode to Static Bypass mode when mains input voltage and frequency exceed the allowable range of the UPS.

9. 12V battery consists of 6 2V battery cells.

10. The following air conditioning, which is comfort air conditioning?

11. Gas fire protection systems are fire extinguishing systems that inject gas (including steam, aerosol) as a fire extinguishing medium.

12. Cryogenic components improve the continuous low pressure caused by low temperature start-up, thus allowing the air conditioner to start up normally.

13. When the sunroof actuator senses a smoke alarm, it can not control the flip sunroof to open automatically.

14. In the main inverter mode, the inverter will change from main inverter to battery inverter mode when overloaded.

15. The main monitoring objects of data center room monitoring system are power systems, environmental systems, fire protection systems etc

16. When using PoE (Power over Ethernet) interface, it has two functions: communication and power supply.

17. What throttle devices does Huawei air-cooled precision air conditioning use? (Multiple choice)

18. R410a refrigerant in the moment of spray out, can frostbite human skin and deeper muscles in a very short period of time and cause frostbited dermal necrosis.

19. Whare are UPS common working modes? (Multiple choice)

20. Access control system can only set whether the user can open the door, can not be set when to open the door.