单选题
An administrator is troubleshooting a communication issue between two computers on the same Layer 2 switch. Which of the following is the BEST way to determine if the switch is causing the issue?（）
发布日期：2020-04-10
Setup an ACL that allows and logs all IP traffic between the two computers
Configure a spanning tree to check for a loop
Setup a span port on the switch to watch for CRC errors
Connect both computers using a crossover cable
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