السؤال #1

Huawei NetEco monitoring system supports hierarchical network management functions.

A. False

B. True

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اجابة صحيحة: B

السؤال #2

Which of the following devices cannot be connected to the southbound interface of the dynamic environment monitoring system?

A. Precision air conditioning

B. UPS

C. Access control equipment

D. Superior network administratorcorrect

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اجابة صحيحة: D

السؤال #3

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

A. ATrue

B. BFalse

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اجابة صحيحة: A

السؤال #4

There are three different categories of earthing (TN, TT and IT) in low voltage distribution systems. The second capital letter represents ().

A. shows the relationship between neutral N and protective earth PE

B. Indicates the relationship of the power system to the exposed conductive parts of the power receiving system

C. Said the relationship between power receiving system exposed conductive parts and the ground

D. Indicates the relationship of the power system on the ground

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اجابة صحيحة: C

السؤال #5

Which of the following parameters represent the pollution of UPS to the power grid?

A. Output power factor

B. Input current harmonicscorrect

C. Overload capacity

D. Efficiency

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اجابة صحيحة: B

السؤال #6

For valve-regulated lead-acid batteries, what are the role of safety valve? (Multiple choice)

A. Conductive

B. Exhaust excess gas

C. prevent air from entering

D. Participate in chemical reactions

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اجابة صحيحة: BC

السؤال #7

In Huawei DC power supply, which of the following is the meaning of BLVD?

A. Battery low voltage power downcorrect

B. Load low voltage power off

C. Battery charge at low temperature

D. Power off due to mains undervoltage

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اجابة صحيحة: A

السؤال #8

What is the requirement for the duration of a single fault in a Class II power grid?

A. ≤8 hours

B. ≤4 hours

C. ≤0

D. ≤6 hourscorrect

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اجابة صحيحة: D

السؤال #9

Which of the following statements about battery packs in UPS systems is wrong?

A. When the AC power input is normal, the AC power will charge the battery pack

B. Batteries are an important part of data center infrastructure and can provide power to back-end loads in the event of a utility power outage

C. If the UPS input voltage and frequency are wide, the battery life can be extended

D. When the inverter fails, the battery pack can still supply power to the rear-end load

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اجابة صحيحة: D

السؤال #10

What is the English abbreviation for sealed valve-regulated lead-acid battery?

A. VRLAcorrect

B. GEL

C. AGM

D. GFW

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اجابة صحيحة: A

السؤال #11

According to Heinrich 's Law, in a machinery accident, which of the following is the proportion of casualties (serious injuries or deaths), minor injuries, and unsafe behaviors?

A. 1:10:100

B. 1:50:200

C. 1:35:400

D. 1:29:300correct

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اجابة صحيحة: D

السؤال #12

The following is for high frequency ups. The correct description of the rectifier components is.

A. Complete AC to DC conversioncorrect

B. Complete DC to AC conversion

C. Realize power factor correction and pressure reduction function

D. Realize power factor correction and boost functioncorrect

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اجابة صحيحة: AD

السؤال #13

In the UPS system, which of the following is the most comprehensive description of the role of the inverter circuit?

A. Convert the DC voltage or battery voltage after AC rectification into AC voltagecorrect

B. No other options

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اجابة صحيحة: A

السؤال #14

What is the maximum data transmission rate supported by FE (Fast Ethernet)?

A. 100K

B. 10 M

C. 1000 M

D. 100 Mcorrect

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اجابة صحيحة: D

السؤال #15

The fuse can protect personal safety when the equipment leaks.

A. True

B. Falsecorrect

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اجابة صحيحة: B

السؤال #16

In the air conditioning system, the function of the oil and gas separator is to separate the lubricating oil from the compressor exhaust and return the separated lubricating oil to the compressor.

A. Truecorrect

B. False

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اجابة صحيحة: A

السؤال #17

Which of the following does not belong to the integrated wiring system?

A. Raised Floorcorrect

B. Fiber Optic

C. Cable Tray

D. Patch Panel

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اجابة صحيحة: A

السؤال #18

() reflects the dryness of the air. The smaller the value, the drier the air.

A. Moisture content

B. Wet bulb temperature

C. Relative humiditycorrect

D. Dry bulb temperature

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اجابة صحيحة: C

السؤال #19

Which of the following is the temperature of the cold channel air inlet area of the data center specified in GB50174-2017?

A. 11 ℃ ~19 ℃

B. 13 ℃ ~22 ℃

C. 18 ℃ ~27 ℃correct

D. 20 ℃ ~35 ℃

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اجابة صحيحة: C

السؤال #20

Which of the following is the active material of the negative electrode of a VRLA battery?

A. Lead sulfate

B. Lead Dioxide

C. Leadcorrect

D. Lead sulfide

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اجابة صحيحة: C

السؤال #21

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

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اجابة صحيحة: A

السؤال #22

How many power modules at most can be inserted in ECC800 collector of Huawei monitoring system?

A. 1

B. 2

C. 3

D. 4

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اجابة صحيحة: B

السؤال #23

When the mains input range is voltage: 150-260VAC, frequency: 45-60Hz, what is the working range of UPS?

A. 110-280V, 40-70HZcorrect

B. 180-280V, 50-90HZ

C. 120-360V, 50-70HZ

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اجابة صحيحة: A

السؤال #24

Data centers usually use gas fire protection systems.

A. ATrue

B. BFalse

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اجابة صحيحة: A

السؤال #25

In a circuit with resistance and capacitance, if the frequency of the current increases from 50 Hz to 100 Hz, how will the impedance of the circuit change?

A. Increase

B. Reducecorrect

C. No change

D. Uncertain

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اجابة صحيحة: B

السؤال #26

Which of the following is not one of the four major components of an air-cooled air conditioner?

A. Compressor

B. Evaporator

C. Fancorrect

D. Condenser

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اجابة صحيحة: C

السؤال #27

The following Does the model of air conditioner have an oil separator?

A. NetCol5000-A25kWcorrect

B. NetCol5000-A35kWcorrect

C. NetCol8000-A50kW

D. NetCol5000-C30kW

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اجابة صحيحة: AB

السؤال #28

Huawei Monitoring System NetEco Cannot provide to third-party network management system SNMP Formal interface.

A. True

B. Falsecorrect

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اجابة صحيحة: B

السؤال #29

Which of the following statements about UPS rectifiers is wrong?

A. With boost function

B. can convert direct current into alternating currentcorrect

C. Can reduce UPS pollution to the power grid

D. Can realize power factor correction

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اجابة صحيحة: B

السؤال #30

In the access control system interface, the fuctions can be achieved are (). (Multiple Choice)

A. Show the switch status of the door

B. Users added

C. Authority allocation

D. View access records

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اجابة صحيحة: ABCD

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