CompTIA Network+

Answer: D - Switches configured with VLANs should be used to improve network performance by increasing the bandwidth available. This will limit the size of the broadcast domains.

Key Takeaway: A broadcast domain is a logical division of a computer network in which all nodes can reach each other by broadcasting at the data link layer. A broadcast domain can be within the same LAN or it can be routed towards other LAN segments. VLANs reduce the need to have routers deployed on a network to contain broadcast traffic. Flooding of a packet is limited to the switch ports that belong to a VLAN, so bandwidth available to hosts is automatically increased.