Final answer:
VTP information is conveyed via CDP, a Layer 2 Cisco proprietary protocol used to share VLAN configuration among switches. LLDP, being vendor-neutral, does not carry VTP information.
Step-by-step explanation:
The VTP (VLAN Trunking Protocol) information is conveyed using CDP (Cisco Discovery Protocol). VTP is a Cisco proprietary protocol used to share VLAN configuration among switches. CDP is a Layer 2 protocol that runs on Cisco devices to discover information about directly connected Cisco equipment, including VTP advertisements. In contrast, LLDP (Link Layer Discovery Protocol), which is a vendor-neutral discovery protocol used for network devices to advertise their identity, capabilities, and neighbors, does not carry VTP information.