What is the primary function of a VTP Server mode on Cisco switches?

The primary function of a VTP (VLAN Trunking Protocol) Server mode on Cisco switches is to allow for the creation and management of VLANs across the network. In VTP Server mode, a switch can create, modify, and delete VLANs, and the changes made on the server will be propagated to other switches that are configured in the same VTP domain. This centralized management of VLANs simplifies the process of maintaining VLAN configurations in larger networks, as any modifications can automatically be advertised to all switches in a consistent manner.

Options suggesting limitations, such as the inability to create or modify VLANs or only forwarding advertisements, do not reflect the functionality of VTP Server mode. Additionally, storing VLAN information only in running-config does not capture the persistent nature of VLAN structure in VTP Server mode, as VLAN configurations can be stored and synced across multiple switches in the domain.