When configuring private VLANs, which configuration task must you do first?
A.
Configure the private VLAN port parameters.
B.
Configure and map the secondary VLAN to the primary VLAN.
C.
Disable IGMP snooping.
D.
Set the VTP mode to transparent.
Explanation:
Before configuring private VLANs, we must set VTP mode to transparent because VTP
version 1 and 2 do not support private VLAN (VTP version 3 does support PVLAN). Notice
that a switch in VTP transparent mode still forwards other VTP updates to its neighbors.