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5CSE3213_02_PacketSwitchingW2012

5CSE3213_02_PacketSwitchingW2012 - diminishing capacity if...

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21 one long cable, so-called backbone , links all devices in the network similar to single-line mainframe architecture each workstation connects to backbone through Network Interface Card (NIC); each NIC has globally unique address data frames are broadcast into coaxial cable receive : NIC listens to medium for frames with its address send : NIC listens to medium for presence of ongoing transmission if no transmission is found, send frame collision : if frame collides with somebody else’s frame, abort transmission and retry later Local Area Networks (cont.) Bus Topology (Ethernet)
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22 The Internet (cont.) Network Card from Wikipedia …
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23
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