Physical arrangement of devices in a network Common types: › Ring › Bus › Star › Tree.
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Transcript of Physical arrangement of devices in a network Common types: › Ring › Bus › Star › Tree.
![Page 1: Physical arrangement of devices in a network Common types: › Ring › Bus › Star › Tree.](https://reader036.fdocuments.in/reader036/viewer/2022062519/5697bfbd1a28abf838ca1d11/html5/thumbnails/1.jpg)
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Physical arrangement of devices in a network
Common types:› Ring › Bus› Star › Tree
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Every device has exactly two neighbors for communication purposes
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
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BACKBONE (cable) connects all devices
Devices send a broadcast message onto the wire that all other devices see
Devices tap into the cable
Only the intended recipient actually accepts and processes the message
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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
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Features a central connection point - HUB
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
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http://www.teach-ict.com/gcse_new/networks/topologies/djp/mov_starnetwork.swf
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Integrates multiple star topologies together onto a bus
Each hub functions as the "root" of the tree
In its simplest form, only hub devices connect directly to the tree bus
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Also known as Hierarchical Topology
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Combination of two or more different network topologies
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Practice
Assign Groups
Head to Academic Courtyard
Create Networks!