What is the name of the VTP feature that prevents traffic forwarding from specific VLANs to another switch?

VTP Pruning is the correct feature because it is specifically designed to optimize bandwidth usage in a VLAN Trunking Protocol (VTP) environment. By enabling VTP pruning, switches can prevent traffic from unused VLANs from being sent across trunk links to other switches. This means that if a VLAN is not active on a switch, the switch will not forward traffic for that VLAN over the trunk.

This feature enhances network performance and reduces unnecessary traffic, ensuring that only pertinent VLAN traffic is sent to switches that have devices in those VLANs. As a result, VTP pruning is particularly beneficial in larger networks where bandwidth can be a concern due to a plethora of VLANs and traffic.

Other options, such as VTP Filtering or VTP Security, do not relate specifically to the prevention of traffic forwarding. VTP Filtering allows for manual control over which VLANs are advertised, but it does not inherently manage traffic flow between VLANs on separate switches. VTP Security focuses on protecting VLAN information and preventing unauthorized devices from participating in VTP, while VTP Monitoring typically concerns monitoring configurations and status rather than controlling traffic flow.