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单选题
When replacing a power supply， what MUST the technician observe？（）
A
voltage
B
current
C
wattage
D
resistance
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Whenreplacingapowersupply,whatMUSTthetechnicianobserve?()
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When a grounding strap is not available, a technician can ground by touching the computer’s:()
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When a grounding strap is not available, a technician can ground by touching the computer’s:（）A、power supply.B、CPU fan.C、memory chips.D、motherboard.
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If a technician suspects that the voltage being delivered to a desktop computer’s power supply is insufficient or incorrect, which device should be used to determine the correct voltage?（）A、A power supply testerB、A multimeterC、A loopback adapterD、A cable tester
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Which of the following should the technician do FIRST when replacing a motherboard?（）A、Use a benchmarking toolB、Use anti-static wrist bandC、Remove the CPUD、Remove the power supply
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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.
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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、MultimeterB、OscilloscopeC、Cable testerD、Power supply tester
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A technician is installing a new power supply into a computer. One of the power supply connectors that the technician needs to connect to the motherboard is square and contains 4-pins. This connector is known as which of the following?（）A、SATAB、FDDC、IDED、ATX
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When replacing a power supply， what MUST the technician observe？（）A、voltageB、currentC、wattageD、resistance
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A technician arrives in Germany and discovers that when their PC is plugged into the outlet, nopower is received. Which of the following actions should the technician take to get the PC tooperate?（）A、Change the BIOS settings to the local timeB、Adjust the voltage selector switchC、Attach a 220 volt power strip from the current region to the PCD、Attach a 120 volt battery backup power supply to the PC
考题
单选题Which of the following should the technician do FIRST when replacing a motherboard?（）A
Use a benchmarking toolB
Use anti-static wrist bandC
Remove the CPUD
Remove the power supply
考题
单选题A technician arrives in Germany and discovers that when their PC is plugged into the outlet, nopower is received. Which of the following actions should the technician take to get the PC tooperate?（）A
Change the BIOS settings to the local timeB
Adjust the voltage selector switchC
Attach a 220 volt power strip from the current region to the PCD
Attach a 120 volt battery backup power supply to the PC
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单选题The technician has replaced a power supply with an identical power supply, and now the high end graphics card is not working. Which of the following should the technician check?（）A
The memoryB
The CMOS batteryC
The PCIe power jackD
The processor for chip creep
考题
单选题A technician does not have power to a PC. Which of the following tools should the technician use to check for electricity?（）A
Cable testerB
Power supply testerC
Tone generatorD
Multimeter
考题
单选题When replacing a power supply， what MUST the technician observe？（）A
voltageB
currentC
wattageD
resistance
考题
单选题If a technician suspects that the voltage being delivered to a desktop computer’s power supply is insufficient or incorrect, which device should be used to determine the correct voltage?（）A
A power supply testerB
A multimeterC
A loopback adapterD
A cable tester
考题
单选题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.
考题
单选题A technician is installing a new power supply into a computer. One of the power supply connectors that the technician needs to connect to the motherboard is square and contains 4-pins. This connector is known as which of the following?（）A
SATAB
FDDC
IDED
ATX
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单选题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.
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单选题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
MultimeterB
OscilloscopeC
Cable testerD
Power supply tester
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