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...Topology is a network specification that determines the s overall layout and data flow patterns comprises physical which describes wiring or shape logical paths through moves arrangement of devices on computer how they communicate with one another note topologies do not have to be same bus type in nodes are arranged linear format each node connected directly cable t connector connects cables together capital tap signal passes by easy implement but can unreliable because entire fails if there break wire signals reflect off end so terminators must installed at both ends terminator device attach points absorb back down line...