Computer Network Arrangement's (by Naseema Shaikh)

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Computer Network Arrangement's


What Is Topology

-Topology defines the structure of the network of how all the components are interconnected to each other there are two types of topologies Physical Topology and Logical Topology.


Types Of Networks

-Bus 

-Ring

-Tree

-Star

-Mesh

-Hybrid


*Bus Topology

-The bus topology is designed in such a way that all the stations are connected through a single cable known as a backbone cable.

-When a node wants to send a message over the stations available in the network receive the message whether it has been addressed or not.

-Each node is either connected to the backbone cable by drop cable or directly connected to the backbone cable.


*Ring Topology

-Ring topology is like a bus topology, but with connected ends.

-The node that receives the message from the previous computer will retransmit to the next node.

-The node flows in one direction it is unidirectional.

-The data flows in a single loop continuously known as an endless loop.

-It has no terminated ends each node is connects other node and having no termination pints.

-The data in a ring topology flow in a clockwise direction.


*Star Topology

-Star topology is an arrangement of the network in which every node is connected to the central hub, switch or a central computer.

-The central computer is known as a serve, and the peripheral devices attached to the server are known as clients.


*Tree Topology

-Tree topology combines the characteristic of bus topology and star topology.

-A tree topology is a type of structure in which all the computers are connected with each other in hierarchical fashion.

-The top-most node in tree topology is known as a root, and all other are the descendants of the root node.

-There is only one path exists between two nodes for the data transmission thus, it forms a parent-child Hierarchy.


*Mesh Topology

-Mesh topology is an arrangement of the network in which computers are interconnected with each other through various redundant connections.

-There are multiple Patha from one computer to another computer.

-It does not contain the switch or any central computer which acts as a central point of communication.

-The internet is an example of the mesh topology.

-Mesh topology is mainly used for WAN implementations when communication failures are a critical concern.


*Hybrid Topology

-The combination of various different topology is known as hybrid topology.

-A hybrid topology is a connection different links and nodes to transfer the data.

-When two or more different topology are combined together is termed as hybrid topology and if similar topology is connected with each other will not result in hybrid topology. for example, if there exist a ring topology in one branch of ICICI bank and bus topology in another branch of ICICI bank, connecting these two topologies will result in hybrid topology. 


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