A．Switch-3548#vlandata<br/>Switch-3548(vlan)#vlan21namevl21<br/>Switch-3548(vlan)#vlan22namevl22<br/>Switch-3548(vlan)#exit<br/>Switch-3548#configureterminal<br/>Switch-3548(config)#interfacef0/1<br/>Switch-3548(config-if)#switchportallowedvlan21<br/>Switch-3548(config-if)#exit<br/>Switch-3548(config)#inerfacef0/2<br/>Switch-3548(config-if)#switchportallowedvlan22
B．Switch-3548#vlandata<br/>Switch-3548(vlan)#setvlan21namevl21<br/>Switch-3548(vlan)#setvlan22namevl22<br/>Switch-3548(vlan)#exit<br/>Switch-3548#configureterminal<br/>Switch-3548(config)#interfacef0/1<br/>Switch-3548(config-if)#switchportaccessvlan21<br/>Switch-3548(config-if)#exit<br/>Switch-3548(config)#inerfacef0/2<br/>Switch-3548(config-if)#switchportaccessvlan22
C．Switch-3548#vlandata<br/>Switch-3548(vlan)#vlan21namevl21<br/>Switch-3548(vlan)#vlan22namevl22<br/>Switch-3548(vlan)#exit<br/>Switch-3548#configureterminal<br/>Switch-3548(config)#interfacef0/1<br/>Switch-3548(config-if)#switchportaccessvlan21<br/>Switch-3548(config-if)#exit<br/>Switch-3548(config)#inerfacef0/2<br/>Switch-3548(config-if)#switchportaccessvlan22
D．Switch-3548#vlandata<br/>Switch-3548(vlan)#vlan21namevl21<br/>Switch-3548(vlan)#vlan22namevl22<br/>Switch-3548(vlan)#exit<br/>Switch-3548#configureterminal<br/>Switch-3548(config)#interfacef0/1<br/>Switch-3548(config-if)#switchportaccess21<br/>Switch-3548(config-if)#exit<br/>Switch-3548(config)#inerfacef0/2<br/>Switch-3548(config-if)#switchportaccess22