Which three options are best security practices for VLANs? (Choose three.)
A.
Disable Spanning Tree on all switches.
B.
Disable all unused ports and put them in an unused VLAN
C.
Always use a dedicated VLAN ID for all trunk ports.
D.
Do not use VLAN 1 for anything.
E.
Enable all unused ports for seamless configuration.
F.
Put all user data traffic in VLAN 1.
Explanation: