Switched Networks
In a switched ethernet the hub is replaced by a switch (each computer now has its own dedicated point-to-point circuit to the switch)
the switch manages collision by storing and forwarding.
the circuit to the switch is often a bottleneck.
In a switched token ring, a switch replaces the token ring hub.
In connecting LANs and ATM networks, an ATM edge switch may translate between ethernet and ATM packets.
ATM to the desktop (51.84 Mbps point-to-point connections from computers to the switch).