单选题Which set of commands is recommended to prevent the use of a hub in the access layer?（）Aswitch(config-if)#switchport mode trunk switch(config-if)#switchport port-security maximum 1Bswitch(config-if)#switchport mode trunk switch(config-if)#switchport port-security mac-address 1Cswitch(config-if)#switchport mode access switch(config-if)#switchport port-security maximum 1Dswitch(config-if)#switchport mode access switch(config-if)#switchport port-security mac-address 1
单选题
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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