What is a recommended action when large workgroups create broadcast containment issues?

Designing VLANs as separate routed subnets is the most effective approach to mitigate broadcast containment issues that arise from large workgroups. When multiple devices are connected to the same broadcast domain, such as in a large workgroup, broadcasts can inundate the network, causing congestion and performance degradation. By implementing VLANs, you can logically segment the network, which limits the broadcast traffic to only the devices within each VLAN. This isolation reduces unnecessary broadcasting across the entire network, improving overall performance and efficiency.

Additionally, routing between VLANs allows for controlled communication between different segments, enhancing security and management capabilities. This method not only helps to contain broadcasts but also optimizes the traffic flow and resource usage.

Other actions, such as implementing additional switches, increasing bandwidth, or segmenting the network physically, may provide some level of relief but do not specifically address the logical management of broadcast domains in the same effective way that VLAN configuration does. Therefore, designing VLANs as separated routed subnets is the recommended and preferred solution for this scenario.