By default, how does a switch handle frames belonging to the native VLAN when they are transmitted over an IEEE 802.1Q trunk port?
They are transmitted without a VLAN tag.
They are dropped and a log message is generated.
They are encapsulated with an ISL header instead of an 802.1Q tag.
They are tagged with a VLAN ID of 1.
According to the IEEE 802.1Q standard, frames that belong to the native VLAN are transmitted over a trunk link without a VLAN tag. This is the default behavior to maintain compatibility with devices that do not understand VLAN tagging. Frames for all other VLANs are tagged with their respective VLAN IDs before being sent across the trunk.
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