Changes

===Star===

===Star===

A star topology has a central node which is responsible for routing all network traffic between the rest of the nodes.  The rest of the nodes connect only to the central node.  The advantage is that there is no contention on the links, but on a busy network the central node will struggle to all of the traffic. The central node has a limited throughput, so if the demand is too high, the central node will no longer be able to manage the volume of traffic.<br />

A star topology has a central node which is responsible for routing all network traffic between the rest of the nodes.  The rest of the nodes connect only to the central node.  The advantage is that there is no contention on the links, but the central node becomes a bottleneck. The central node has a limited throughput, so if the demand is too high, the central node will no longer be able to manage the volume of traffic.<br />

Wireless internet ([[WiFi]], [[WiMax]], etc.) must utilize this network architecture, with the wireless access point being the central node. A collision avoidance system is used to ensure that only one client is transmitting at a time.  This kind of topology also has several other uses.  For example, a star network may be used to isolate untrusted clients from each other using separate lines directly from each one to the router, where port security prevents communication between them.

Wireless internet ([[WiFi]], [[WiMax]], etc.) must utilize this network architecture, with the wireless access point being the central node. A collision avoidance system is used to ensure that only one client is transmitting at a time.  This kind of topology also has several other uses.  For example, a star network may be used to isolate untrusted clients from each other using separate lines directly from each one to the router, where port security prevents communication between them.