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8/12/2019 M.Sc Presentation Topologies
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TOPOLOGIES created by hemant kumar daksh 1
Topologies
Session 2
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TOPOLOGIES created by hemant kumar daksh 2
Topologies Topology refers to physical or logical
arrangement of network Physical topologies are
Single Node Bus Star Ring Mesh Tree Hybrid
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TOPOLOGIES created by hemant kumar daksh 3
Single Node Topology Single device, at times device called dumb
terminal is connected to the server
Devices operates on files from server andreturns them back after completing task
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TOPOLOGIES created by hemant kumar daksh 4
Single Node Topology Advantages:
Easy to install,
configure andmanage
Least expensive
Single cable isrequired
Disadvantages:
Network consists
of single device Dumb terminal is
dependent onserver
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TOPOLOGIES created by hemant kumar daksh 5
Bus topology
All devices are connected to a common cablecalled trunk Maximum segment length of cable is 200 m Maximum of 30 devices per segment
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TOPOLOGIES created by hemant kumar daksh 6
Bus topology
Advantages:
Installation of
devices is easy Requires less cable
compared to startopology
Less expensive andworks better forsmaller networks
Disadvantages:
If backbonebreaks, entirenetwork gets down
Difficult to isolateproblems
Limited number ofdevices
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TOPOLOGIES created by hemant kumar daksh 7
Star Topology
Each device is connected to a central devicecalled hub through cable Data passes through hub before reaching
destination
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TOPOLOGIES created by hemant kumar daksh 10
Ring Topology
Advantages:
Data travels atgreater speed
No collisions
Handles largevolume of traffic
Disadvantages:
More cabling isrequired comparedto bus
One faulty deviceaffects the entirenetwork
Addition of devices
affect network
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TOPOLOGIES created by hemant kumar daksh 11
Dual Ring Topology Consists of twoindependentprimary andsecondary rings
Secondary ring isredundant, usedonly when primarystops functioning
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Mesh Topology
Used in WANs tointerconnect LANs
Every device isconnected to everyother device
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Type
Types
Full mesh Partial mesh
Full mesh topology All devices are connectedto each other
Partial mesh topology - Some devices areconnected to only those with whom theyexchange most of the data
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Tree Topology
Tree topology is acombination of starand bus topology.
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Hybrid Topology
Combines two or more differentphysical topologies
Commonly Star-Bus or Star-Ring
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