Get Certified Easily with Online H12-411_V2.0-ENU Dumps

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March 8, 2025

Using HCIA-Data Center Facility V2.0 H12-411_V2.0-ENU questions can help you build confidence as you prepare for the exam. By practicing with these H12-411_V2.0-ENU dumps questions, you will be better prepared and more confident when you take the actual exam. Besides, H12-411_V2.0-ENU exam dumps questions cover a wide range of topics that are relevant to the certification exam. By using H12-411_V2.0-ENU dumps questions, you will be able to ensure that you have a comprehensive understanding of the material covered on the exam. Practice free Huawei H12-411_V2.0-ENU exam dumps below.

Page 1 of 20

1. The NetEco6000 management system supports access to third-party devices to achieve centralized management of the computer room. When monitoring which of the following devices is considered third-party device access, it is necessary for the front-line to submit an RM order and report the third-party device access fee?

Huawei UPS 5000E

Huawei large power supply TP48300

Emerson Air Conditioning

None of the above

2. Which of the following descriptions about the upward supply and downward return air supply method is correct?

The airflow is sent out from the middle air outlet, passes through the working area, and then is discharged from the lower air return outlet.

It is not necessary to control the entire space, only the air-conditioned area at the bottom of the room can be controlled.

The airflow is sent out from the upper air supply port, enters the working area and then is discharged from the upper air return port

The air supply outlet is located at the upper part of the air-conditioned room, and the return air outlet is located at the lower part of the air-conditioned room.

3. UPS5000-A has the industry-leading reliability design. Which of the following is correct about the reliability design of UPS5000-A? (Multiple choice)

Strong grid adaptability, 138-485V voltage input range

The single board is reinforced with three anti-corrosion paint

More than 1,400 test guarantees

No derating at 40 degrees

4. What are the components of a lightning protection device? (Multiple choice)

Lightning Terminal

Downlead

Grounding device

Insulated terminals

5. For valve-regulated lead-acid batteries, what are the functions of the safety valve?

Exhaust excess gas and prevent air from entering

No other options

6. ATS dual power automatic switching switch can realize fast load-carrying mechanical switching of two power supplies.

True

False

7. Which of the following descriptions about UPS ECO mode are correct? (Multiple choice)

ECO mode is generally used in areas with good power quality

In this mode, the UPS working efficiency is higher than the main circuit mode

ECO mode is bypass mode

In ECO mode, when the mains power exceeds the preset range, the UPS will switch to inverter output

8. Which type of circuit breaker is used in the PDU8000 precision power distribution cabinet sub-circuit?

Molded case circuit breaker

Miniature circuit breaker

Frame Breaker

Isolating switch

9. In the dynamic environment monitoring system, users query the alarm information of refrigeration equipment through the () function.

10. There are three different types of grounding in low-voltage power distribution systems (TN, TT, IT), the first capital letter represents ()

Page 2 of 20

11. Which function in the dynamic environment monitoring system is used to indicate the severity of the corresponding fault?

Alarm time

Alarm Name

Alert Level

Alarm source

12. By configuring different external units and components, Huawei's air-cooled precision air conditioners can adapt to the following ambient temperatures: outdoor -40 ℃ ~ +55 ℃ , humidity: ≤95%RH

True

False

13. For unsaturated air, the relationship between dry bulb temperature, wet bulb temperature and point A temperature is ()

14. What systems does the computer room fire protection system mainly consist of? (Multiple choice)

Automatic fire alarm,

Gas fire extinguishing,

Smoke prevention and exhaust,

Safe evacuation

15. UPS5000-E (25-125KVA) only supports upstream wiring.

True

False

16. Which of the following functions can display the entry and exit records of data center personnel?

Configuration Management

Access Control Management

Energy Efficiency Management

Work Order Management

17. The demand for government cloud computer room construction only exists in provinces and cities, and there is no opportunity in districts and counties.

True

False

18. Which of the following parameters can reflect the energy efficiency status and energy efficiency of a data center?

ROI

PUE

MTTF

SPC

19. The function of the backfeed protection card is that when energy backfeed occurs in the main circuit or bypass, the backfeed protection card sends a drive alarm signal, and the drive trip switch (configured by the customer) is disconnected, which plays a role in backfeed protection.

True

False

20. Most data center operations and maintenance refer to ITIL standards to develop standard operation and maintenance procedures. For example, if an air conditioner in the computer room is found to be faulty and needs to be troubleshooted, what is the procedure in ITIL that can be used to handle it?

Configuration Management

Problem Management

Incident Management

Change Management

Page 3 of 20

21. The refrigerant of water-cooled/ethylene glycol air conditioners has been filled before leaving the factory, and on-site installation is convenient and quick.

True

False

22. What is the total Ct load power of the 40-foot CT solution of the FM1000A V2R3 version?

36KW

40KW

42KW

48KW

23. UPS can purify the AC input, output stable AC, and protect the load.

True

False

24. NetCol5000-A025H half cabinet row-level variable frequency air-cooled precision air conditioner, NetCol5000-A042H full cabinet row-level air-cooled variable frequency precision air conditioner NetCol5000-AC030H half cabinet row-level chilled water precision air conditioner, NetCol8000-c series room-level chilled water precision air conditioner can be plugged in. What are the components of dial maintenance? This design significantly reduces component maintenance time. (Multiple choice)

Main control module

Display

Fan

Water valve

25. Air conditioning indicators are often measured in "four degrees". Which of the following are these four degrees? (Multiple choice)

Air supply speed

Cleanliness

Humidity

Temperature

26. Which of the following items belong to communication interface types? (Multiple choice)

DB9

RJ45

RS485

Cold pressed terminal

27. A customer has a load of 100 kw and wants to choose a suitable UPS. Which of the following Huawei products is the most suitable?

UPS5000

UPS2000

HVDC5000

PDU8000

28. The energy efficiency ratio of air conditioning is the ratio of effective input power to cooling capacity, and its value is expressed in W/W.

True

False

29. There are three main types of Modbus protocols: Modbus-RTU, Modbus-ASC, and Modbus-TCP

True

False

30. Regarding the description of the data center cooling system, which of the following is wrong?

Among rack-level, row-level and room-level cooling, row-level cooling has the shortest airflow path.

No other options

Page 4 of 20

31. The user management function supports grouping users and configuring corresponding operation permissions for different user groups.

True

False

32. The administrator cannot limit other users ’ login time and login IP address through Huawei monitoring system.

True

False

33. The function of the safety valve in the battery structure is to prevent excessive internal pressure and discharge excess ().

34. The alarms of the dynamic environment monitoring system usually have different levels.

True

False

35. Which of the following description of the rectifier components of high-frequency UPS is correct? (Multiple choice)

Complete the conversion from AC to DC

Complete the conversion from DC to AC

Realize power factor correction and voltage reduction function

Realize power factor correction and boost function

36. During the installation of the battery, the maintenance channel of the high-voltage battery pack used should be insulated.

True

False

37. UPS can purify the AC input, output stable AC, provide uninterrupted power supply and protect the load.

True

False

38. Which of the following does not belong to liquid cooling technology?

Immersion Liquid Cooling

Cold plate liquid cooling

Spray liquid cooling

Centralized liquid cooling

39. Which of the following are common operating modes of double conversion UPS? (Multiple choice)

Offline mode

Static Bypass Mode

Battery Mode

Main circuit inverter mode

40. At present, the installation methods of batteries in data centers are mainly rack installation and cabinet installation.

True

False

Page 5 of 20

41. FM1000A V2R3 version IT solution comes standard with cabinet spring damping device

True

False

42. The UPS front-end input can be two mains power lines, one main and one backup, or one mains power line and one diesel generator input.

True

False

43. What are the three major indicators of air conditioning? (Multiple choice)

Temperature

Humidity

Cleanliness

Gear

44. Which of the following components can prevent liquid hammer caused by refrigerant migration when the unit is shut down?

Compressor

Expansion valve

Solenoid valve

Fluid storage tank

45. Which of the following statements about the reliability of UPS5000-A (30kVA~120kVA) are correct? (Multiple choice)

6kV/5kA lightning protection design

Ultra-wide input voltage range

The inverter has strong overload capacity

Conformal coating technology

46. In which of the following scenarios can Huawei UPS be applied? (Multiple choice)

Internet Data Center

Enterprise Data Center

Core computer room

Office

47. When chemical reactions occur inside VRLA batteries, hydrogen and oxygen are produced and water is consumed, so VRLA batteries need to be replenished regularly.

True

False

48. A UPS2000-G-15K at a certain location has a three-phase input and a single-phase output. After installation, it was found that the main bypass input was three-phase, the output was single-phase, and the main and bypass were from the same source. Which of the following descriptions of the wiring method of the UPS are correct? (Multiple choice)

The wiring method is correct and the UPS can start normally.

The wiring method is wrong. If the front-end AC input switch is closed, the UPS will be damaged by short circuit immediately.

This wiring method is wrong, which will cause the UPS to not work in battery mode, but can still work in bypass mode and inverter mode

This wiring method is wrong. The correct wiring method should be that the bypass input is single-phase, the main input is three-phase, and the main and bypass are of the same source.

49. Configure a modular redundant UPS system. As long as the number of modules meets the basic requirements, there is no need to consider the distribution of UPS modules on different racks.

True

False

50. Among the following models, which one has the widest input frequency range?

NXR

UPS5000-A

Galaxy5000

9390

Page 6 of 20

51. Which of the following communication functions does UPS5000-E include? (Multiple choice)

Dry contact card

RS485

SNMP

RS232

52. What are the components of Huawei's dynamic environment monitoring system? (Multiple choice)

NETECO server,

ECC800,

Smart ETH socket,

Sunroof actuator

53. Factors that can cause safety problems for lithium- ion batteries include overcharging, over-discharging, short circuit, extrusion, falling, etc.

True

False

54. What is the number of group control units for Huawei NetCol series intelligent cooling products?

55. When electrolyte leakage occurs in the battery, () treatment method is more appropriate.

Wear gloves and wipe it clean with a rag, and check whether it needs to be replaced

No other options

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

11 ℃ ~19 ℃

13 ℃ ~22 ℃

18 ℃ ~27 ℃

20 ℃ ~35 ℃

57. The dynamic environment monitoring system has only a two-level architecture.

True

False

58. Compared with the horizontal air supply of row-level air conditioners, upward air supply is more suitable for data centers with lower single cabinet power density.

True

False

59. FusionModule800 channel have a skylight?

True

False

60. Which of the following are functions of Huawei's DC power supply AC distribution unit?

AC power distribution

Rectification

AC lightning protection

AC overvoltage protection

Page 7 of 20

61. Regarding the efficiency of UPS5000-A-500K, which of the following options is correct? (Multiple choice)

Efficiency: 96%

Efficiency 94%

ECO mode 99%

ECO mode 98%

62. The refrigeration performance of the environmentally friendly refrigerant R410A is better than that of the non-environmentally friendly refrigerant R22.

True

False

63. What is the screen size of the FusionModule2000 air conditioner?

10 inches

7 inches

5 inches

9 inches

64. Common working modes of UPS are ()

65. The access control system can only set the user to open the door but cannot set when the door can be opened.

True

False

66. PDU8000 precision power distribution cabinet supports single-channel input and dual-channel input.

True

False

67. Which of the following configuration principles is incorrect? (Multiple choice)

For computer rooms, the redundancy factor can be ignored when designing the basic capacity of the UP

The load is a motor load, and the rated power is used to calculate the UPS capacity.

Constant current method is used to calculate battery capacity, which is preferred for short-term backup

When designing cables, the greater the redundancy, the better, so that the system reliability is better

68. A system is configured with a 15-minute battery backup time. The discharge termination voltage of a single battery cell should be selected ().

1.60V

1.67V

1.75V

1.80V

69. According to GB50174-2017, the infrastructure of Class A data center should be configured according to the () system.

70. When the power density of a single cabinet is greater than 10kI/R, which cooling form is recommended?

Room-level air conditioning upward air supply

Closed channel for horizontal air supply of row-level air conditioners.

Unsealed horizontal air supply channel for row-level air conditioning

Room-level air conditioning

Page 8 of 20

71. UPS5000-A built-in isolation transformer

True

False

72. Huawei monitoring system NETECO supports hierarchical network management functions. ()

True

False

73. What are the additional investments that industrial frequency machines may bring compared to high frequency machines? (Multiple choice)

Computer room area

Load-bearing (installation and construction)

Refrigeration electricity cost

Oil engine

Operating electricity cost

74. From the perspective of battery structure, lithium-ion batteries are more environmentally friendly and safer than lead-acid batteries.

True

False

75. When UPS works in ECO mode, because it works in bypass mode, its efficiency is lower than that in main inverter mode.

True

False

76. Huawei's chilled water air conditioner relies on () to regulate water flow.

77. Which of the following are correct about direct current? (Multiple choice)

DC arcs are easier to extinguish than AC arcs

The direction of direct current does not change periodically over time

The current of direct current does not change periodically over time

Electronic equipment is suitable for DC power supply

78. What power input methods does FusinoModule800 support?

Single or dual

Dual-channel

Single channel

79. Which of the following four components does not belong to the air conditioner?

80. NetEco management system supports user rights and domain division functions, which can ensure that different operation and maintenance personnel can only view the equipment they manage. For example, through authority allocation, an operation and maintenance personnel can only view the equipment information of several network computer rooms.

True

False

Page 9 of 20

81. When guiding the NetCol8000-C room-level chilled water intelligent temperature control product, give priority to guiding the use of our () model. (Multiple choice)

150D

130D

160D

190D

82. Common UPS system configurations include N system, N+X system, and 2N system.

True

False

83. If the capacity of UPS is 20KVA, then in normal operation, the UPS front-end input capacity may be ()

25KVA

30KVA

28KVA

84. The basic principle of the rotary dehumidifier is that water vapor encounters the cooling tube fins and condenses into water droplets to dehumidify.

True

False

85. If the power supply of a certain device is interrupted, it will cause great economic losses. What kind of load does this device belong to?

Level 3 load

Level 4 load

Primary load

Secondary load

86. NETECO system can define alarm sounds for different alarm levels

True

False

87. To modify the plane view of the ECC800 micromodule, you need to log in to the WEB with the pipe operator's authority to operate

True

False

88. () can check whether the refrigerant contains water.

89. FUsinoModule1000A V2R3 version 40-foot CT solution can install 8 CT cabinets.

True

False

90. Gas fire fighting system refers to a fire fighting system that uses gas (including steam and aerosol) as the fire fighting medium.

True

False

Page 10 of 20

91. FUsinoModule1000A V2R3 version 20-foot CT solution is equipped with 4 600*800*2200mm CT cabinets.

True

False

92. The fire extinguishing agent mainly used in the data center fire protection system is ()

93. According to my country's regulations, when using portable lighting in spraying operations or dusty environments, which of the following voltages should be used as a safe voltage?

24V

12V

36V

42V

94. Compared with NXR, which of the following indicators of UPS5000-A (30kVA~120kVA) has advantages? (Multiple choice)

Input voltage range

No derating at 40 degrees

Output power factor

Rack tower compatible

95. The UPS system is configured with 32 12V batteries. What is the float charge voltage set for the UPS?

432V

451V

540V

564V

96. Which of the following outdoor unit models has a dual fan?

NetCo1500-A072

NetCo1500-A038

NetCo1500-A026

NetCo1500-A032

97. Which of the following data center cabinet related performances need to be considered when selecting a cabinet? (Multiple choice)

Load-bearing capacity

Heat dissipation capacity

Is it convenient to wire?

Whether grounding is supported

98. The main function of () is to distribute electric energy, which distributes the previous-level electric energy to various types of electrical equipment according to requirements, standards and specifications, such as UPS, air conditioners, lighting systems, etc.

99. Which of the following components is used to assist in oil return?

Sight glass

Oil collecting bend

Reverse bend

Oil sight glass

100. NetEco management system supports remote alarm notification via SMS, email, etc., prompting users to handle alarms as soon as possible.

True

False

Page 11 of 20

101. What is the output terminal type of UPS2000-G-6K?

Terminal block

C13

Terminal block + C13

Terminal block + national standard socket

102. When the load is 60KW, the capacity of each UPS is 100KVA, and the power factor is 0.95, then when the system must be redundantly configured, at least () UPS are required.

103. Which of the following certifications has the PDU8000 precision power distribution cabinet passed? (Multiple choice)

CCC

Taier Certification

104. Which may be caused by the damage of NETCOL500O-C thermal insulation cotton?

Excessive fan noise

The drainage capacity of the equipment has been significantly reduced

Condensation in pipes

Fan stalled

105. Which of the following descriptions can basically determine that the battery is faulty? (Multiple choice)

The voltage of one battery rises much faster than that of other batteries when charging.

The battery pack is 2 degrees Celsius higher than the ambient temperature when discharging

A battery has bulged significantly and is leaking

The voltage of one battery drops much faster than other batteries during discharge.

106. The dynamic environment monitoring system supports alarm management functions.

True

False

107. What configuration methods does Fusionllodule800 air conditioner support?

N/N+1

N+1

108. Which of the following are the working modes of Huawei's indirect evaporative cooling air conditioner? (Multiple choice)

Dry mode

Wet Mode

Mechanical Mode

Hybrid cooling mode

109. What could be the reason why the fan of the NETCOL5000C device does not rotate when it is turned on?

The filter is dirty and clogged

The power module of the machine is faulty or abnormal

Failure of the strong drainage system

Condensate drainage is not smooth

110. Compared with lithium-ion batteries, lead-acid batteries have lower energy density, short cycle life and poorer safety, but the initial investment in lead-acid battery projects is lower, so they are still the main product for data center energy storage.

True

False

Page 12 of 20

111. Which of the following humidifiers needs to sprinkle water on the filler made of water-absorbing material when working, and the treated air flows through the filler to complete the humidification?

Wet film humidifier

Infrared humidifier

High pressure spray humidifier

Electrode humidifier

112. Huawei's monitoring system NetEco can only manage the infrastructure of a single data center and cannot centrally manage the infrastructure of multiple data centers in different regions.

True

False

113. UPS5000-A supports adjustable number of batteries to avoid replacement of the entire battery pack due to failure of a single battery, solving the problem of difficult maintenance of traditional UPS batteries. The range is 30~40 batteries.

True

False

114. UPS5000-A 30~120kVA can support wall installation.

True

False

115. UPS5000-E (25-125KVA) does not support iBattery function.

True

False

116. The cables of a certain project will be subjected to great tensile force during use. When the current carrying capacity of the cables just meets the line requirements, Engineer A selected steel belt armored power cables.

True

False

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

Output power factor

Input current harmonics

Overload capacity

Efficiency

118. Which of the following descriptions about electrical equipment safety is wrong?

The metal casing of electrical equipment must be grounded (zeroed) for protection

Electrical equipment should be corrosion-resistant and moisture-proof

When a fire occurs in electrical equipment, water can be used to extinguish the fire.

It is strictly forbidden to use electrical equipment beyond the rated value

119. In the main circuit inverter mode, when the UPS is overloaded, it will switch from the main circuit inverter to the battery inverter mode.

True

False

120. () components can improve the heat transfer capacity of the heat exchanger.

Page 13 of 20

121. What types of line systems are included in FusionDC1000A? (Multiple choice)

Ground wire

Power cord

Signal line

Fire Line

122. FUsinoModule1000A V2R3 version customized spraying can meet UL120min fire resistance requirements.

True

False

123. The maximum output power of UPS5000-E (25-75KVA) bypass module is 128KW.

True

False

124. According to the Data Center Design Specification (GB 50174-2017), data centers are divided into which of the following levels? (Multiple choice)

125. () belongs to indirect contact heat and moisture treatment equipment.

126. Water-cooled air conditioning and chilled water air conditioning are the same refrigeration system.

True

False

127. RER is used to measure the use of renewable energy in data centers to promote the use of renewable energy such as solar energy, wind energy, and hydropower, and to generate zero or very low carbon emissions.

True

False

128. ACB circuit breakers are mainly used at the front end of IT loads, such as in UPS output cabinets.

True

False

129. Communication interface refers to the rules and agreements that two entities must follow to complete communication or service, such as RJ45 interface.

True

False

130. The main functions of MCB circuit breakers include circuit breaker protection and overload protection.

True

False

Page 14 of 20

131. The intelligent rPDU in FusionModule2000 version 3.0 can control the switch of each socket.

True

False

132. All devices that establish communication through the SNMP protocol have IP addresses.

True

False

133. Which of the following certification directions does Uptime Tier certification include? (Multiple choice)

Planning Certification

Design Certification

Operational Certification

Construction Certification

134. In the air conditioning system, the function of the oil-gas separator is to separate the lubricating oil brought out by the compressor exhaust and return the separated lubricating oil to the compressor.

True

False

135. The government cloud only has room construction requirements in provinces and cities, but not in districts and counties.

True

False

136. If FusionModule800 uses down pipe routing, what is the minimum raised floor height?

100mmn

500mm

250mm

137. During the construction process, what should be used for low-voltage live work (below 1KV)? (Multiple choice)

Insulated shoes

Insulating gloves

Insulated clothing

138. Which of the following statements is wrong regarding cable design? (Multiple choice)

When the UPS current is large, any number of cables can be connected in parallel.

The UPS cable is designed according to the rated current of the cable and does not need to be derated

The cable designed for UPS should take into account the wiring capacity of the UPS system terminals.

The UPS AC cable voltage drop is controlled within 5% to meet the design requirements

139. Which of the following are functions of the FusionModule2000 controller (ECC800)? (Multiple choice)

Alarm system linkage

Alarm Management

Access Control Management

140. If UPS5000-400K switches to bypass mode, the maintenance station is closed, and both the main power module and the bypass module stop working.

True

False

Page 15 of 20

141. What is the maximum capacity of the power module of UPS5000-E?

20kVA

30kVA

40kVA

50kVA

142. The principle of the condenser is to cool the high-temperature and high-pressure gaseous refrigerant into liquid, thereby achieving heat transfer and release.

True

False

143. In the dynamic environment monitoring system, viewing the detailed alarm information can help locate the alarm source.

True

False

144. The NetEco management system can automatically calculate the electricity expenses of the computer room based on the tiered electricity price strategy.

True

False

145. During discharge, Li+ is released from the negative electrode and embedded in the positive electrode (gaining electrons).

True

False

146. What applications can the dynamic environment monitoring system be applied to? (Multiple choice)

Data center room,

Unmanned substation,

Wireless base station,

Transmission node room

147. The function of the lead-acid battery is to hold electrolyte, plates, separators, etc.

True

False

148. What are the categories of dual power transfer switch ATS according to different transfer switch types? (Multiple choice)

Standard Switching

Delayed switching

Closed switch

149. What are the throttling devices used in Huawei's air-cooled precision air conditioners? (Multiple choice)

Thermostatic expansion valve,

Electronic expansion valve

Capillary

Three-way valve

150. When it is necessary to stop the running equipment, directly disconnect the isolating switch to cut off the power supply of the equipment.

True

False

Page 16 of 20

151. Match the following lithium- ion battery positive electrode materials with their molecular structure types.

152. Which of the following transmission modes support full-duplex data transmission? (Multiple choice)

RS232

RS485

RS422

153. Which of the following descriptions are advantages of precision air conditioning in data centers over comfort air conditioning? (Multiple choice)

Large air volume

Continuous operation

Large enthalpy difference

High temperature and humidity control accuracy

154. According to Heinrich's Law, the absence of an accident means that no accident will occur.

True

False

155. NetCol5000-A042H full-cabinet row-level variable frequency air-cooled precision air conditioner has load-clearing dehumidification function, which can meet the reliable dehumidification requirements under a minimum load of 10%, avoiding the risk of condensation in low-load and high-humidity environments.

True

False

156. Which of the following are indicators for lithium-ion battery cell pairing? (Multiple choice)

Difference in internal resistance between cells

Voltage difference between cells

Platform difference between cells

Capacity difference between cells

157. In the data center room, the lower the relative humidity of the air, the better.

True

False

158. FUsinoModule1000A V2R3 version 20-foot CT solution supports maximum CT load of 8KW.

True

False

159. Data centers usually use gas fire protection systems.

True

False

160. Huawei's self- developed air conditioner has a 6KV lightning protection filter function, the highest in the industry.

True

False

Page 17 of 20

161. FUsinoModule1000A V2R3 version 40 feet IT solution can provide 7~8 IT cabinets

True

False

162. Which of the following air supply methods is mainly suitable for process air conditioning where there is a lot of waste heat to be removed from the lower working area?

Medium air supply

Send up and send down

Send down and return

Send it down and return it

163. The three-phase unbalanced current in the TN-S low-voltage distribution system causes the protective line PS to generate a voltage to the ground.

True

False

164. If the UPS is overloaded, it works in normal mode for a while and then switches to () mode. If the overload continues, the UPS shuts down.

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

≤8 hours

≤4 hours

≤0.5 h

≤6 hours

166. Which of the following is the longest phase in the data center life cycle?

Operation and Maintenance

Construction

Design

Planning

167. Which of the following statements about UPS rectifiers is wrong?

With boost function

can convert direct current into alternating current

Can reduce UPS pollution to the power grid

Can realize power factor correction

168. What are the functions of the safety valve for valve- regulated lead-acid batteries? (Multiple choice)

Prevent air from entering

Conductive

Participate in chemical reactions

Expel excess gas

169. What are the optional temperature control types in the FusionModule2000 refrigeration system? (Multiple choice)

Half cabinet 25kW air cooling

Half cabinet 30kW water cooling

Row-level chilled water 65kW

Full cabinet 42kW air cooling

170. NETECO's report function has various display forms, including bar charts, pie charts, curve charts and other visual presentations.

True

False

Page 18 of 20

171. The main objects monitored by the data center computer room monitoring system include power system, environmental system, fire protection system, etc.

True

False

172. In UPS configuration, for a parallel N+X system, if X=N , the system has the same operating logic as the dual-bus system.

True

False

173. FM2000 integrated power distribution cabinet has two input switches, single-channel MCCB and ATS.

True

False

174. In the monitoring system, which of the following functions can access control management achieve? (Multiple choice)

View access control records

Add access control user

Access control authority allocation

Monitoring access control events

175. UPS5000-A has built-in SNMP and ModBus cards to reduce customers' management investment costs.

True

False

176. The UPS5000-A parallel signal line does not adopt a ring connection method, which results in a single point of failure and reduces system reliability.

True

False

177. FM2000 integrated UPS has two configurations: single MCCB and dual ATS.

True

False

178. What parallel connection mode can UPS5000-A support? (Multiple choice)

N+X parallel operation

Double busbar

Parallel operation is not supported

179. MCB circuit breakers can be divided into B, C, D, Z, and K levels according to different tripping characteristics. Which level of tripping characteristics should be used for IT loads?

B level

C-level

D level

Z level

180. () is used in Huawei's line-level precision air conditioners.

Page 19 of 20

181. The domestic power supply standard is 380v/50Hz

True

False

182. () circuit breakers are typically low-voltage circuit breakers used for IT loads.

183. Which fire-fighting measures can be adopted in Class A computer rooms?

Gas fire extinguishing system

Water mist fire extinguishing system

Automatic sprinkler system

All of the above

184. What functions can the dynamic environment monitoring system achieve? (Multiple choice)

Operation status monitoring,

Operation parameter display,

Warning information display,

Remote management

185. Which of the following models is Huawei's room-level water-cooled air conditioner?

NetCol8000-E220

NetCol5000-C065

NetCol5000-A042

NetCol8000-C070

186. () can complete the conversion from DC to AC.

187. UPS5000-E (50KVA module) supports adjustable number of batteries, avoiding the replacement of the entire battery pack due to a single battery failure, and solving the problem of difficult maintenance of traditional UPS batteries. The adjustable range is 30-44 batteries.

True

False

188. The humidifier used in Huawei's line-level precision air conditioners is an infrared humidifier.

True

False

189. NETCOL5000-A The air conditioner unit makes abnormal sound during operation. Check whether the compressor, fan, and pipeline lights are fixed normally or not.

True

False

190. Which of the following formulas is the calculation formula for PUE?

Power consumption of IT equipment/total power consumption of data center

Total power consumption of data center/power consumption of IT equipment

IT equipment power consumption/UPS total capacity

Renewable energy supply/total power consumption of data centers

Page 20 of 20

191. Under the same load conditions, the backup time of UPS is mainly determined by the battery capacity and the number of batteries. The larger the battery capacity, the longer the backup time.

True

False

192. The International Electrotechnical Commission (IEC) stipulates that the contact voltage limit is ()V, and stipulates that there is no need to consider safety measures to prevent electric shock below 25V.

193. UPS5000-E is a high-efficiency UPS. Which of the following statements is correct? (Multiple choice)

Efficiency up to 96%

Efficiency can reach 95% at 20% load

Efficiency can reach 94% at 20% load

Efficiency can reach 96% at 40% load

194. The dynamic environment monitoring system can be deployed in medium and large modular data centers, small modular data centers, container data centers, etc.

True

False

195. Which of the following descriptions of the conditions for switching to equalizing charging for batteries in the FusionModule2000 integrated UPS is correct? (Multiple choice)

When the soc value is lower than the set value, the battery will enter the equalization charging state.

The battery continuous floating charge days reach the set value

During charging, when the battery temperature is detected to be above 45 ° C

In the charging state, when the battery current value is greater than the equalizing charging current coefficient, it will enter the equalizing charging state 14

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