network topologies & network devices
DESCRIPTION
This is a presentation about network topologies and network devices. they are also described by images for better underastanding.TRANSCRIPT
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Network topologies
By: Anam jabeen
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DEFINITION
• What is a Topology ?
• The physical topology of a network refers to the configuration of cables, computers and other peripherals.
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Types of Topologies
• Bus topology• Ring topology• Star topology• Mesh topology• Tree topology• Hybrid topology
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Bus Topology
• Popular on LANs because they are inexpensive and easy to install.
• Consists of a main run of cable with a terminator at each end
• All computers and devices connected to central cable or bus.
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Bus topology
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Ring Topology
• Primarily is used for LANs, but also is used in WANs.
• Data travels from device to device around entire ring, in one direction.
• Cable forms closed ring or loop, with all computers and devices arranged along ring.
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Ring Topology
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Star Topology
All devices connect to acentral device, calledhub.All data transferredfrom one computer toanother passes through hub.
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Star Topology
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Mesh Topology
• A network setup where each computer and network device is interconnected with one another.
• This topology is not commonly used for most computer networks as it is difficult and expensive.
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Mesh Topology
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Tree topology
• A tree topology combines the characteristics of bus and star topologies.
• It consists of different groups of computers attached in star topology.
• The groups are then connected to a bus backbone cable.
• Tree topology is used for the expansion of an existing network.
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Tree topology
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Hybrid Topology
• A combination of two or more different topologies makes a hybrid topology.
• One of the prominent advantages of this topology is its flexibility
• Since different topologies come together in a hybrid topology, managing the topology becomes difficult.
• It is also very expensive to maintain.
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Hybrid Topology
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