题目内容:
如下图所示,3com和Cisco公司的交换机相互连接,在两台交换机之间需传输VLANID为1、10、20和30的4个VLAN信息,Catalyst 3548交换机VLAN Trunk的正确配置是( )A.Switch-3548 (config-if)#switchport trunk encapsulation dot1q
Switch-3548 (config-if)#switchport trunk allowed vlan 1,10,20,30
B.Switch-3548 (config-if)#switchport mode trunk
Switch-3548 (config-if)#switchport trunk encapsulation isl
Switch-3548 (config-if)#switchport trunk allowed vlan 1-30
C.Switch-3548 (config-if)#switchport mode trunk
Switch-3548 (config-if)#switchport trunk encapsulation negotiate
Switch-3548 (config-if)#switchport trunk allowed vlan 1-30
D.Switch-3548 (config-if)#switchport mode trunk
Switch-3548 (config-if)#switchport trunk encapsulation dot 1q
Switch-3548 (config-if)#switchport trunk allowed vlan 1,10,20,30
参考答案:
答案解析: