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?（）A Setup an ACL that allows and logs all IP traffic betw
题目
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?（）
A
Setup an ACL that allows and logs all IP traffic between the two computers
B
Configure a spanning tree to check for a loop
C
Setup a span port on the switch to watch for CRC errors
D
Connect both computers using a crossover cable