Which protocol is VTP based on?

VLAN Trunking Protocol (VTP) operates based on the Generic Attribute Registration Protocol (GARP). GARP is defined in the IEEE 802.1Q standard and provides a framework for the registration and deregistration of attributes across a network. VTP utilizes GARP for the purpose of managing the propagation of VLAN configuration information across a network of switches.

VTP simplifies the administration of VLANs by ensuring that all switches in the same VTP domain share consistent VLAN information. This minimizes the potential for configuration errors and helps maintain a coherent network structure. By employing GARP, VTP can dynamically and efficiently communicate VLAN configuration changes such as creating, deleting, or modifying VLANs to all switches within the same VTP domain.

Other protocols listed, such as STP (Spanning Tree Protocol), EIGRP (Enhanced Interior Gateway Routing Protocol), and RIPv2 (Routing Information Protocol version 2), serve different roles in a network and do not relate directly to VLAN management in the manner that GARP does. Therefore, the choice of GARP/GVRP as the basis for VTP is appropriate as it establishes the necessary framework for VLAN management and communication among network devices.