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單項選擇題

Which set of commands is recommended to prevent the use of a hub in the access layer?()

A.switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1
B.switch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1
C.switch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1
D.switch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1

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