What is a major benefit of using VLANs in a network?

Utilizing VLANs (Virtual Local Area Networks) in a network offers significant benefits, with improved network security and segmentation being a primary advantage. VLANs allow the logical separation of networks within the same physical infrastructure. This segmentation permits different groups of devices to communicate as if they are on distinct networks, which enhances security by isolating sensitive data from general traffic.

By keeping separate departments or user groups on different VLANs, one can ensure that users in one VLAN do not have access to the resources of another VLAN without proper authorization. This reduces the risk of internal threats and unauthorized access, as well as minimizes the potential for broadcast storms, which can compromise network performance. Consequently, the implementation of VLANs helps in establishing a more secure and manageable network environment.