【单选题】Refer to the exhibit. The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem? (Choose three.)(图)
A.
所示: 连接交换机的两个端口未变为橙色或绿色。 解决此物理层问题的最有效步骤是什么? (选择三项。)
B.
Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
D.
Ensure that cables A and B are straight-through cables.
F.
Ensure cable A is plugged into a trunk port.
H.
Ensure the switch has power.
J.
Reboot all of the devices. K. 所有设备。 L. Reseat all cables.