单项选择题

在建立ID号为999,不给定VLAN名的VLAN时,系统自动使用的缺省VLAN名是

A.VLAN999
B.VLAN0999
C.VLAN00999
D.VLAN000999
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单项选择题

如下图所示,在一台Cisco Catalyst 3500交换机上连接两台PC,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的配置中,正确的是

A.Switch-3548 #vlan dataSwitch-3548 (vlan)#vlan 21 name v121Switch-3548 (vlan)#vlan 22 name v122Switch-3548 (vlan)#exitSwitch-3548 #configure terminalSwitch-3548 (config)#interface f0/1Switch-3548 (config-if)#switchport allowed vlan 21Switch-3548 (config-if)#exitSwitch-3548 (config)#interface f0/2Switch-3548 (config-if)#switchport allowed vlan 22
B.Switch-3548 #vlan dataSwitch-3548 (vlan)#set vlan 21 name v121Switch-3548 (vlan)#set vlan 22 nanle v122Switch-3548 (vlan)#exitSwitch-3548 #configure terminalSwitch-3548 (config)#interface f0/1Switch-3548 (config-if)#switchport access vlan 21Switch-3548 (config-if)#exitSwitch-3548 (config)#interface f0/2Switch-3548 (config-if)#switchport access vlan 22
C.Switch-3548 #vlan dataSwitch-3548 (vlan)#vIan 21 name v121Switch-3548 (vlan)#vlan 22 name v122Switch-3548 (vlan)#exitSwitch-3548 #configure terminalSwitch-3548 (config)#interface f0/1Switch-3548 (config-if)#switchport access vlan 21Switch-3548 (config-if)#exitSwitch-3548 (config)#interface f0/2Switch-3548 (config-if)#switchport access vlan 22
D.Switeh-3548 #vlan dataSwitch-3548 (vlan)#vlan 21 name v121Switch-3548 (vlan)#vlan 22 name v122Switch-3548 (vlan)#exitSwitch-3548 #configure terminalSwitch-3548 (config)#interface f0/1Switch-3548 (config-if)#switchport access 21Switch-3548 (config-if)#exitSwitch-3548 (config)#interface f0/2Switch-3548 (config-if)#switchport access 22
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