What is one of the benefits of creating VLANs?

Creating VLANs is beneficial because they effectively reduce the size of broadcast domains. In a traditional flat network, when devices communicate, they broadcast packets to all other devices in the network segment. This can lead to excessive traffic that impacts performance, especially as the number of devices increases.

By implementing VLANs, network design separates devices into distinct logical segments, regardless of their physical location. Each VLAN operates as an independent broadcast domain, meaning that broadcast traffic from one VLAN does not reach devices in another VLAN. This segmentation not only minimizes unnecessary broadcast traffic but also improves overall network efficiency and security. It allows for better traffic management and can enhance the performance of applications that are sensitive to latency and network congestion.

The other options do not align with the function of VLANs. For example, they do not eliminate the need for switches, nor do they increase the size of broadcast domains; in fact, they do the opposite. Additionally, while VLANs may require more complex routing to facilitate communication between different VLANs, this complexity is not a direct benefit of creating VLANs themselves.