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,Catalyst3548交换机VLANTrunk的正确配置是( )。
Switch-3548(config-if)#switchporttrunkallowedvlan1,10,20,30
B.Switch-3548(config-if)#switchportmodetrunk
Switch-3548(config-if)#switchporttrunkencapsulationisl
Switch-3548(config-if)#switchporttrunkallowedvlan1-30
C.Switch-3548(config-if)#switchportmodetrunk
Switch-3548(config-if)#switchporttrunkencapsulationnegotiate
Switch-3548(config-if)#switchporttrunkallowedvlan1-30
D.Switch-3548(config-if)#switchportmodetrunk
Switch-3548(config-if)#switchporttrunkencapstulationdotlq
Switch-3548(config-if)#switchporttrunkallowedvlan1,10,20,30
参考答案:
答案解析: