Which VTP message type transmits the complete list of VLANs?

The VTP VLAN Advertisement message type is responsible for transmitting the complete list of VLANs configured on a switch. This message includes detailed information about all VLANs, such as their IDs, names, and related configurations. When a switch is added to a VTP domain or when there are changes to VLAN configurations, the VTP VLAN Advertisement is used to ensure that all switches within the same VTP domain have a consistent view of the VLAN information.

In a VTP environment, this type of communication is vital for maintaining the integrity and synchronization of VLAN configurations across the network. The other message types serve different purposes: Configuration Requests are used to request configuration information, Summary Advertisements provide an overview of the state of VLANs but not the detailed information, and Subset Advertisements also do not carry the complete list of VLANs but are used to inform about changes to existing VLANs rather than the full configuration. Thus, VTP VLAN Advertisements is the essential message type for transmitting the comprehensive VLAN list.