Which of the following methods of dividing VLANs has the advantage that when the user’s physical location moves, that is, when changing from one switch to another, VLAN does not need to be reconfigured-(choose one or more)

Which of the following methods of dividing VLANs has the advantage that when the user’s physical location moves, that is, when changing from one switch to another, VLAN does not need to be reconfigured-(choose one or more)
A . Port-based VLAN
B . VLAN based on MAC address
C . Protocol-based VLAN
D . VLAN based on IP subnet

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Answer: BCD