Free Huawei H12-421-ENU Exam Dumps Questions & Answers

When installing the UPS battery, the installation tool does not need to be insulated because the load is not charged.

• A.False
• B.True

When the Huawei air-cooled air-conditioning compressor is turned on for the first time, the crankcase heating belt needs to be warmed up for more than ( ) hours.

• A.6
• B.24
• C.12
• D.2

If the status of the access which collected by the network management is always open, it can be checked by (). (Multiple choice)

• A.Check if the door of access monitoring is closed
• B.Check AC actuator wiring
• C.Check if the access control actuator and the door magnetic lock wiring are normal.
• D.Check if the suction plate angle and tightness on the door are suitable

ECC800 does not support historical data export.

• A.False
• B.True

Closed hot and cold aisle systems increase cooling efficiency and reduce energy consumption.

• A.False
• B.True