单选题What is the effect of applying the switchport trunk encapsulation dot1q command to a port on a Cisco Catalyst switch？（）ABy default， native VLAN packets going out this port will be tagged.BWithout an encapsulation command， 802.1Q will be the default encapsulation if DTP fails to negotiate a trunking protocol.CThe interface will support the reception of tagged and untagged traffic.DIf the device connected to this port is not 802.1Q-enabled， it will not be able to handle 802.1Q packets.
单选题
What is the effect of applying the switchport trunk encapsulation dot1q command to a port on a Cisco Catalyst switch？（）
A
By default， native VLAN packets going out this port will be tagged.
B
Without an encapsulation command， 802.1Q will be the default encapsulation if DTP fails to negotiate a trunking protocol.
C
The interface will support the reception of tagged and untagged traffic.
D
If the device connected to this port is not 802.1Q-enabled， it will not be able to handle 802.1Q packets.
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