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单选题Which of the following factors is the MOST likely cause of a power supply fan failure？（）A  Extreme temperature variancesB  Extreme humidity variancesC  Power stability fluctuationsD  Excessive dust accumulation

题目
单选题
Which of the following factors is the MOST likely cause of a power supply fan failure？（）
A

 Extreme temperature variances

B

 Extreme humidity variances

C

 Power stability fluctuations

D

 Excessive dust accumulation

参考答案和解析
正确答案： B
解析： 暂无解析
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相似问题和答案

第1题：

Which of the following factors is the MOST likely cause of a power supply fan failure?()

A. Extreme temperature variances

B. Extreme humidity variances

C. Power stability fluctuations

D. Excessive dust accumulation


参考答案：D

第2题：

A technician receives a computer for repair and observes that the fan on the power supply is not moving. Which of the following should the technician do？ （）

  • A、Move the power supply voltage switch to 220 volts.
  • B、Add an additional fan to help cool the computer.
  • C、Replace the cable that attaches the power supply to the motherboard.
  • D、Replace the power supply.

正确答案:D

第3题：

A technician suspects the AC voltage into a PC power supply is bad. Which of the following toolswould MOST likely be used to confirm the diagnosis?()

A. Multimeter

B. Oscilloscope

C. Cable tester

D. Power supply tester


参考答案：A

第4题：

A technician has just installed a new power supply into a desktop computer and now the computer will not turn on. Which of the following is the MOST likely cause?（）

  • A、The voltage selector switch on the power supply is set incorrectly.
  • B、The 3.3v power line is connected to the wrong input on the motherboard.
  • C、The new power supply voltage rating is too high.
  • D、The 12v power cord is installed incorrectly.

正确答案:A

第5题：

A technician suspects the AC voltage into a PC power supply is bad. Which of the following toolswould MOST likely be used to confirm the diagnosis?（）

  • A、Multimeter
  • B、Oscilloscope
  • C、Cable tester
  • D、Power supply tester

正确答案:A

第6题：

An administrator has a malfunctioning uninterruptible power supply (UPS). Which of the following is the MOST likely cause of the problem?()

A. Battery needs to be replaced

B. Light switch is turned off

C. Smart cable is disconnected

D. UPS needs a firmware update


参考答案：A

第7题：

Which of the following is the MOST likely to cause a server power supply fan to fail but allows the power supply to still be functional？（）

  • A、Dust
  • B、Power Surge
  • C、Excessive humidity
  • D、High temperatures

正确答案:A

第8题：

Which of the following is the MOST important physical consideration when deploying a new server?()

A. Humidity monitors, Biometrics, and fire suppression

B. Cooling, rack space, and power requirements

C. Service level agreements, uninterruptible power supply (UPS) deployment, and CCTV

D. Biometrics, fire suppression, and power requirements


参考答案：B

第9题：

The user turns on the computer and hears a popping sound and detects a burning smell. Thesystem will not power on. Which of the following is the MOST likely problem?（）

  • A、Power supply has blown.
  • B、CPU fan is faulty.
  • C、Motherboard has overheated and shutdown.
  • D、UPS has been tripped.

正确答案:A

第10题：

Which of the following is MOST useful in HVAC planning？ （）

  • A、 Uninterruptible Power Supply （UPS） load
  • B、 Humidity
  • C、 Amperage
  • D、 Voltage
  • E、 Temperature

正确答案:B,E

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