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May 29th, 2015
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A major disadvantage of Ethernet 802.3 networks is collisions the number of nodes sharing the Ethernet network will have effect on the throughput or productivity of the network.

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When an incoming data frame is received by a switch and the destination MAC address is not in the table, the switch forwards the frame out all ports, except for the port on which it was received.When the destination node responds, the switch records the node's MAC address in the address table from the frame's source address field.A major disadvantage of Ethernet 802.3 networks is collisionsthe number of nodes sharing the Ethernet network will have effect on the throughput or productivity of the network.The network area where frames originate and collide is called the collision domainWhen a host is connected to a switch port, the switch creates a dedicated connection, a traffic is kept separate from all other traffic,For example, if a 12-port switch has a device connected to each port, 12 collision domains are created.Switches reduce collisions and improve bandwidth use on network segments because they provide dedicated bandwidth to each network segment.Switches=do not filter broadcast framesRouters and VLANs are used to segment both collision and broadcast domainsLatency is the time a frame or a packet takes to travel from the source station to the final destination.if three properly configured switches separate two computers, the computers may experience less latency than if two properly configured routers separated them. This is because routers conduct more complex and time-intensive functionsSwitch features such as port-based memory buffering, port level QoS

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