What is the function of the command sw

What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch（）。

AIt creates a VLAN 999 interface.
BIt designates VLAN 999 for untagged traffic.
CIt blocks VLAN 999 traffic from passing on the trunk.
DIt designates VLAN 999 as the default for all unknown tagged traffic.

参考答案

参考解析：

分类：CCNA系列认证综合练习题库

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