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Ð ÐIf one workstation fails, the entire network fails.
Ð ÐIt is quite costly.
Ð ÐIn this network, adding and removing nodes is difficult and can cause problems with network activities.
Ð ÐThe ring is difficult to debug.
Ð ÐAll computers must be turned on in order for them to connect with one another.
Star Topology
A star topology for a LAN is one in which each node is connected to a central connection point, such as a hub or switch.
A star requires more cable than, say, a bus, but the benefit is that if one cable fails, only one node is affected. Each
device in the network is connected to a hub, which is a central device. If one device wishes to send information to
another, it must first send the information to the hub, which then sends the information to the specified device.
Device 1
Device 5 Device 2
Hub
Device 4 Device 3
Advantages
Ð ÐIt is extremely dependable; if one cable or device breaks, the others will continue to function.
Ð ÐIt is efficient since no data collisions can occur.
Ð ÐRobust in nature and is easier to implement.
Ð ÐFault detection is simple.
Ð ÐWhen attaching or disconnecting devices, there are no network interruptions.
Ð ÐEach device only needs one port to connect to the hub.
Ð ÐWhen N devices are connected in a star, the number of wires necessary to connect them is N. As a result, lining up
is simple.
Disadvantages
ÐMore cable is required than with a linear bus.
Ð
Ð ÐNodes associated with the connecting network device (network switch) are disabled and unable to communicate
with the network.
Ð ÐDue to the value of the connected devices, it is more expensive than a linear bus topology (network switches)
Ð ÐIf the hub fails, the entire system fails, and none of the devices can function without it.
Ð ÐThe hub necessitates greater resources and regular upkeep.
Ð ÐExtra hardware (hubs or switches) is required, which increases the cost.
Ð ÐThe performance is based on a single concentrator, the hub.
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