The term physical topology refers to the way in which a network is laid out physically. It refers to the configuration of cables, computers, and other peripherals. The topology of a network is the geometric representation of the relationship of all the links and linking devices (usually called nodes) to one another.
There are six types of topologies:
i. Mesh topology.
ii. Star topology.
iii. Ring topology.
iv. Tree topology.
v. Bus topology.
vi. Hybrid topology.
In a mesh topology, every device has a dedicated point-to-point link to every other device. The term dedicated means that the link carries traffic only between the two devices it connects. Here, if we have n nodes, then we need to connect to n-1 nodes and n(n-1) physical links. However, if each physical link allows communication in both directions (duplex mode), we need n(n-1)/2 links.
Advantages of a Mesh Topology
Disadvantages of a Mesh Topology
In local area networks where the star topology is used, each machine is connected to a central hub. The star topology allows each machine on the network to have a point to point connection to the central hub. All of the traffic which transverses the network passes through the central hub. The hub acts as a signal booster or repeater which in turn allows the signal to travel greater distances.
Advantages of a Star Topology
Disadvantages of a Star Topology
In local area networks where the ring topology is used, each computer is connected to the network in a closed loop or ring. The signal passes through each machine or computer connected to the ring in one direction, from device to device, until it reaches its destination. Each machines or computers connected to the ring act as signal boosters or repeaters. When a device receives a signal intended for another device, its repeater regenerates the bits and passes them along.
Advantages of a Ring Topology
· It is relatively easy to install and reconfigure.
Disadvantages of a Ring Topology
· Only one machine can transmit on the network at a time.
· The failure of one machine will cause the entire network to fail.
The type of network topology in which a central 'root' node (the top level of the hierarchy) is connected to one or more other nodes that are one level lower in the hierarchy (i.e., the second level) with a point-to-point link between each of the second level nodes and the top level central 'root' node, while each of the second level nodes that are connected to the top level central 'root' node will also have one or more other nodes that are one level lower in the hierarchy (i.e., the third level) connected to it, also with a point-to-point link, the top level central 'root' node being the only node that has no other node above it in the hierarchy
Advantages of a Tree Topology
Disadvantages of a Tree Topology
In local area networks where bus technology is used, each machine is connected to a long, single cable. The cable acts as a backbone to link all the devices in a network. Each computer or server is connected to the single bus cable through drop lines and some kind of connector. A terminator is required at each end of the bus cable to prevent the signal from bouncing back and forth on the bus cable.
Advantages of Bus Topology
Disadvantages of Bus Topology
Hybrid networks use a combination of any two or more topologies in such a way that the resulting network does not exhibit one of the standard topologies (e.g., bus, star, ring, etc.). A hybrid topology is always produced when two different basic network topologies are connected.
Advantages of a Hybrid Topology
· It provides a better result by it.
· It can be designed in many ways for various purposes.
Disadvantages of Hybrid Topology
· It is costly.
· Data Communication and Networking By Behrouz A Forouzan.
· Wikipedia and other websites.
Created By- A.H.M Tasbir Farid,
B.Sc in Telecommunication & Electronic Engineering, Hajee Md. Danesh Science & Technology University, Dinajpur, Bangladesh.
disadvatanges of network topologies
GO TO armsitgs.wetpaint.com and they have a lot of stuff over topologies it could really help you
Topologies refer to the way networks are connected. Different topologies have different advantages.
advantages of network in terms of hardware
Network topology is the way a computer network is set up and arranged, Examples for possible topologies include ring, star, bus, and line. Each of these topologies have their advantages and disadvantages, with star being the most common in today's world.
what are advantages and disadvantages of centralisation what are advantages and disadvantages of centralisation
Advantages and Disadvantages of equity
# What are macros? what are its advantages and disadvantages? # What are macros? what are its advantages and disadvantages?
disadvantages of nickel alloys
what are the advantages and disadvantages of the DVORAK what are the advantages and disadvantages of the DVORAK an advantages is that it is easer to learn
advantages and disadvantages of what?