What is a characteristic of a managed switch?

A managed switch is designed to provide greater functionality and control compared to an unmanaged switch. One key characteristic of a managed switch is that it allows for remote configuration. This capability enables network administrators to modify settings, monitor traffic, and manage network performance from a distance, typically through a web interface or network management protocol. This feature is essential for businesses that require flexibility and the ability to troubleshoot issues without needing physical access to each device.

In contrast, being able to configure only via physical access would limit the practicality and efficiency of managing a network, particularly in larger or more distributed environments. Additionally, a managed switch can offer advanced features such as support for virtual LANs (VLANs), quality of service (QoS), and port mirroring, which are not possible with a simple network repeater. The option stating that it does not support VLANs is therefore misleading, as managed switches often serve this function to enhance network segmentation and security.