A.You must have at least two VLANs defined in every Cisco switched network.
B.All VLANs are configured at the fastest switch and, by default, propagate this information to all other switches.
C.You should not have more than 10 switches in the same VTP domain.
D.VTP is used to send VLAN information to switches in a configured VTP domain.
Answer: D
Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunk Protocol (VTP) is used to propagate VLAN information across a trunked link.