单选题A user reports their laptop computer can no longer connect to a server. The computer works correctly in a different office. Which of the following tools would be used to troubleshoot this issue?（）ACable testerBMultimeterCFiber splicerDLoopback plug
单选题
A user reports their laptop computer can no longer connect to a server. The computer works correctly in a different office. Which of the following tools would be used to troubleshoot this issue?（）
A
Cable tester
B
Multimeter
C
Fiber splicer
D
Loopback plug
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