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It�s also a single broadcast domain
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in other words if a device like A sends a broadcast
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everyone in the network would receive that broadcast
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and would need to process the broadcast.
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When a device received a broadcast it will process it
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in other words it will received it on the Network Interface Card and then
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forward it to upper layers in the OSI model
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so as an example the CPU or Central Processing Unit of a PC
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would be interrupted when a PC receives a broadcast.
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So if device A starts jabbering, in other words start sending many, many broadcast
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unto the network, those broadcast would be received by all the devices in the network
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and every device would be interrupted and we have to process the broadcast.
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So the CPU's of every PC will be interrupted by every broadcast sent by A
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and would need to process that broadcast
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if A were sending a broadcast but the traffic was only intended for B both C and D
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would still have to receive that broadcast.
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Process it and drop it, but the problem is their CPU's will interrupted
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which may cause the PC to slowdown.
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Thus, because of the issues with regards to maximum segment length
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maximum host on a segment and cable breaks, 10base2 was replace with 10baseT.
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10baseT uses unshielded twisted pair, it�s a very unlikely that you going to encounter
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10base2 in today�s network. so 10baseT or twisted pair Ethernet
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refers to the use of cable that contains insulated copper wires
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twisted together in pairs with the maximum distance of 100 meters
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the cable is a lot thinner and more flexible than coaxial cable
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which was use in both 10base2 and 10base5 networks.
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In 10baseT we tend to use unshielded twisted pair cables
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shielded twisted pair cables maybe used in noisy environments
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where there�s a shield around each pair of wires, plus an overall shield around the
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cables to protect them against excessive electrical magnetic interference.
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This maybe causes as an example where networks cables are close to electrical cables.
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So additional protection is required.
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But most networks tend to use unshielded twisted pair
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where the cables are not shielded against interference in the same way.
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Once again 10baseT means 10Mbps, base means baseband rather than broadband,
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T means twisted pair with the maximum segment size of a 100 meters.
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The connectors used are RJ-45 connectors as seen here and you�ve probably
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connected an RJ-45 connected to your PC many times in the past.
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