单选题A server will not power on. Which of the following devices should the administrator use FIRST to determine the problem?（）ALoop back plugsBPower supply testerCSystem logsDTDR
单选题
A server will not power on. Which of the following devices should the administrator use FIRST to determine the problem?（）
A
Loop back plugs
B
Power supply tester
C
System logs
D
TDR
参考解析
解析：
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