题目内容：
如下图所示，在一台Cisco Catalyst 3500交换机上连接2台PC机，使用端口划分方法将它们分别划分在VLAN ID为21、22，VLAN名为VL21、VL22的VLAN中，下列关于交换机VLAN的配置，正确的是（ ）。
A．Switch-3548#vlan dataSwitch-3548(vlan)#vlan 21 name v12l
Switch-3548(dan)#vlan 22 name vl22
Switch-3548(vlan)#exit
Switch-3548#configure terrainal
Switch-3548(config)#int fO/1
Switch-3548(config-if)#switchport access v]an 21
Switch-3548(config)#int f0/2
Switch-3548(config-if)#switchport access vlan 22
B．Switch-3548#vlan data
Switch-3548(vlan)#set vlan 21 name v121
Switch-3548(vlan)#set vlaJl 22 name vl22
Switch-3548(dan)#exit
Switch-3548#configure terminal
Switch-3548(config)#intfO/1
Switch-3548(config-if)#switchport access vlan 2 1
Switch-3548(config)#int fO/2
Switch-3548(config-if)#switchpoa access vlan 22
C．Switch-3548#vlan data
Switch-3548(vlan)#vlan 21 name vl21
Switch-3548(vlan)#vlan 22 name vl22
Switch-3548(vlan)#exit
Switch-3548#configure terminal
Switch-3548(config)#int fO/1
Switch-3548(config-if)#switchport allowed vlan 21
Switch-3548(config)#int fO/2
Switch-3548(config-if)#switchport allowed vlan 22
D．Switch-3548#vlan data
Switch-3548(vlan)#vlan 21 name vl21
Switch-3548(vlan)#vlan 22 name vl22
Switch-3548(vlan)#exit
Switch-3548#configure terminal
Switch-3548(config)#int 10/1
Switch-3548(config-if)#switchport access 2 1
Switch-3548(config)#int fO/2
Switch-3548(config-if)#switchport aceess 22
参考答案：
答案解析：