What is the function of the command switchport trunk native vlan 999 on a switch?
A、
It designates VLAN 999 for untagged traffic．
B、
It blocks VLAN 999 traffic from passing on the trunk．
C、
It creates a VLAN 999 interface．
D、
It designates VLAN 999 as the default for all unkown tagged traffic．
【正确答案】
A
【答案解析】
设置vlan999为本征vlan，交换机默认本征vlan为vlan1．此题正确答案为A．
提交答案
关闭