多选题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?（）AEnsure that the Ethernet encapsulations match on the interconnected router and switch ports.BEnsure that cables A and B are straight-through cables.CEnsure cable A is plugged into a trunk port.DEnsure the switch has power.EReboot all of the devices.FReseat all cables.
多选题
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?（）
A
Ensure that the Ethernet encapsulations match on the interconnected router and switch ports.
B
Ensure that cables A and B are straight-through cables.
C
Ensure cable A is plugged into a trunk port.
D
Ensure the switch has power.
E
Reboot all of the devices.
F
Reseat all cables.
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Refer to the exhibit. You have a non-Cisco switch that is not communicating properly while connected to the distribution-layer Cisco switching fabric.Which two best-practice actions can you take to overcome this problem? （）(Choose two.)A. Turn off MST (802.1s) on all switches.B. Turn on MST (802.1s) on all switches.C. Turn on RSTP (802.1w) on all switches.D. Turn off RSTP (802.1w) on all switches.
Refer to the exhibit. What switch proves the spanning－tree designated port role for the network segment that services the printers?() A.Switch1B.Switch2C.Switch3D.Switch4
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