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Topology

Topology. Topology. Physical arrangement of devices in a network. Common types: Ring Bus Star Tree. Ring Topology. Ring Topology. All messages travel through a ring in the same direction (either "clockwise" or "counterclockwise").

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Topology

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  1. Topology

  2. Topology • Physical arrangement of devices in a network • Common types: • Ring • Bus • Star • Tree

  3. Ring Topology

  4. Ring Topology • All messages travel through a ring in the same direction (either "clockwise" or "counterclockwise") • A failure in any cable or device breaks the loop and can take down the entire network • Found in some office buildings or school campuses Every device has exactly two neighbors for communication purposes

  5. Ring Topology

  6. Bus Topology

  7. Bus Topology • Devices tap into the cable • Devices send a broadcast message onto the wire that all other devices see • Only the intended recipient actually accepts and processes the message BACKBONE (cable) connects all devices

  8. Bus Topology • Advantages: • Easy to connect a computer or peripheral to a linear bus • Requires less cable length than a star topology • Disadvantages • Entire network shuts down if there is a break in the main cable • Terminators are required at both ends of the backbone cable • Difficult to identify the problem if the entire network shuts down • Work best in networks with just a few computers

  9. Bus Topology

  10. Bus Topology

  11. Star Topology

  12. Star Topology • Advantages: • Easy to install • Failure in any cable will only take down one computer's network access and not the entire LAN • Easy to detect faults and to remove parts • Disadvantages: • Requires more cable than linear topology • If the hub fails, the entire network also fails • Often used in home networks • Features a central connection point - HUB

  13. Star Topology http://www.teach-ict.com/gcse_new/networks/topologies/djp/mov_starnetwork.swf

  14. Star Topology

  15. Tree Topology • In its simplest form, only hub devices connect directly to the tree bus • Each hub functions as the "root" of the tree Integrates multiple star topologies together onto a bus

  16. Tree Topology • Also known as Hierarchical Topology

  17. Hybrid Topology • Combination of two or more different network topologies

  18. Practice Assign Groups Head to Academic Courtyard Create Networks!

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