Like the rest of the network switches, managed fiber switch also uses fiber optic cables. The difference is that this switch comes with superior management, operational and configuration capabilities. Features include partitioning into VLANs (Virtual Local Area Networks), QoS (Quality of Service) control, port security, and many other security features. Telecommunication networks, enterprise networks and voice-data communications in data centers are best served by managed fiber switches because they are able to provide VLAN and QoS support which is essential for optimum data traffic. In general, managed fiber switches are employed for the control of large amounts of data traffic. The administrators can configure these switches to specific regions of the network, types of data, and even performance level of the network.