What happens if a switch in VTP client mode loses connectivity with the VTP server?

When a switch is configured in VTP client mode, it relies on the VTP (VLAN Trunking Protocol) server to receive VLAN information and updates. If the VTP client loses connectivity with the VTP server, it will not be able to receive any new VLAN updates or configurations. However, it does not lose its existing VLAN configurations entirely; instead, it continues to function based on the last known VLAN information it had before the disconnection.

This means that the VTP client will maintain and use the last active VLANs that it learned from the server while it was still connected. It can forward traffic for those existing VLANs as long as they were configured before the loss of connectivity. The VTP client will resume accepting updates when connectivity to the VTP server is restored, but until that point, it operates based on its last valid configuration.

This understanding is why the correct answer highlights that the switch continues to function with the last known VLAN configuration. The other choices incorrectly suggest that the switch would either lose VLAN capabilities completely or stop traffic, which contradicts the operational behavior of VTP clients.