TO 1.2: Topology Facts.pdf

TO 1.2: Topology Facts.pdf - TestOut LabSim 1.2.2 Topology...

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9/8/2017 TestOut LabSim 1/2 1.2.2 Topology Facts Topology is the term used to describe how devices are connected and how messages flow from device to device. There are two types of network topologies: The physical topology describes the way the network is wired. The logical topology describes the way in which messages are sent. The following table describes several common physical topologies: Topology Description Bus A bus topology consists of a trunk cable with nodes either inserted directly into the trunk or tapped into the trunk using offshoot cables called drop cables. With a bus: Signals travel from one node to all other nodes. A device called a terminator is placed at both ends of the trunk cable. Terminators absorb signals and prevent them from reflecting repeatedly back and forth on the cable. It can be difficult to isolate cabling problems.

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