单选题Which of the following BEST describes the function of a redundant power supply？（）A  Provides additional diagnostic LEDsB  Reduces power consumptionC  Eliminates a single point of failureD  Reduces total cost of ownership

第1题：

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.

第3题：

第4题：

Which of the following is the BEST case scenario for power fault tolerance within a server？（）

• A、 Redundant power supplies with one power supply connected and one power supply as a hot spare.
• B、 Redundant power supplies with each connected to a separate power circuit.
• C、 Redundant power supplies connected via a Y-cable.
• D、 Redundant power supplies with each connected to the same power circuit.

第5题：

Which of the following accurately describes the meaning of redundant cooling？（）

• A、The source of cooling to a RAID system
• B、The cooling system in a redundant power supply
• C、A cooling system that can be installed in case of failure
• D、A second cooling system in case of a failure

第6题：

An administrator identifies that a server is shutting down. The administrator powers up the server and OS loads but after a few minutes it powers down again. Which of the following is the cause?（）

• A、Redundant power supply failure
• B、CPU overheating
• C、Memory failure
• D、Hard disk failure

第7题：

Which of the following tools is BEST used to measure voltage and amperage from a power source?（）

• A、Loopback Plug
• B、Multimeter
• C、Power Supply Tester
• D、Extension Magnet

第8题：

第9题：

An administrator is troubleshooting a power supply that is believed to have failed. Which of the following tools will BEST help test the power supply？（）

• A、ESD Equipment
• B、Multimeter
• C、POST Card
• D、Toner Probe

第10题：

A server has been intermittently shutting off. The power going to the server was tested and is giving the appropriate voltages. Which of the following tools would be used to test the power supply？（）

• A、 POST diagnostic card
• B、 OTDR
• C、 TDR
• D、 Multimeter