Which topology gives a description of how traffic flows through VLANs?

The logical topology describes how data packets transfer within a network, including how VLANs are configured and how traffic flows among them. Unlike physical topology, which focuses on the actual physical connections and layout of devices, logical topology emphasizes the way that data communication occurs within the network, which includes the segmentation and management of VLANs.

In the context of VLANs, the logical topology illustrates how virtual LANs are set up to allow different segments of a network to communicate as if they are on the same physical network while maintaining isolation from each other. This is crucial for managing network traffic, enhancing security, and optimizing performance. Hence, understanding the logical topology is essential for network design and troubleshooting, especially when dealing with VLAN configurations.

The other options do not provide relevant insights into VLAN traffic flow. Physical topology is more about the tangible setup of cables and devices, while ring and mesh topologies refer to specific arrangements of network devices rather than the abstract representation of traffic flow.