To understand network simulation you have to understand simulation and to understand simulation you have to understand system , Model, simulation, Computer Network Model so let us start with system.
What is a system?
Generally speaking, a system [1] is collection of objects that interact each other to achieve a common goal, for example, government is a system in which objects such as, leaders, police and bureaucrats work altogether to serve public of the country.
What is a model?
A model is an abstract representation of a system, the well known example is a computer game in which cars , roads and obstacles are abstract representation and the whole game is a car game model. An equation x+y=10 that represents a line is a model, generally speaking an equation in
mathematics is model.
What is simulation?
Conducting experiment on a model is called simulation, when a game runs it is simulation of the car
game. You might have gone to a two wheeler showroom where they make you learn driving on a simulator. To train pilots simulators are used.
What is a computer network model ?
A computer network model is an abstract representation of links, nodes ( router, switches, hubs
and sensor nodes) and the TCP/IP stack model that executes under the nodes. Furthermore, a computer network is a complex system in which there are several attributes such as, mobility, signal noise, transmit power, energy of a node, security and these attributes will require another model to incorporate into existing model and that is how a network model evolves into a simple to complex model.
What is network simulation ?
Experiment on a network model is called simulation, usually softwares are used to conduct experiment on computer network models which are called simulators, the famous simulators are
ns-2, ns-3, OPNET, Qualnet, Jsim, OMNeT++.
Conclusion- In this article, I have explained briefly described system, model, simulation a computer network model hope this will help you to start understanding of network simulation.
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References
[1] http://www.physicalgeography.net/fundamentals/4b.html
What is a system?
Generally speaking, a system [1] is collection of objects that interact each other to achieve a common goal, for example, government is a system in which objects such as, leaders, police and bureaucrats work altogether to serve public of the country.
What is a model?
A model is an abstract representation of a system, the well known example is a computer game in which cars , roads and obstacles are abstract representation and the whole game is a car game model. An equation x+y=10 that represents a line is a model, generally speaking an equation in
mathematics is model.
What is simulation?
Conducting experiment on a model is called simulation, when a game runs it is simulation of the car
game. You might have gone to a two wheeler showroom where they make you learn driving on a simulator. To train pilots simulators are used.
What is a computer network model ?
A computer network model is an abstract representation of links, nodes ( router, switches, hubs
and sensor nodes) and the TCP/IP stack model that executes under the nodes. Furthermore, a computer network is a complex system in which there are several attributes such as, mobility, signal noise, transmit power, energy of a node, security and these attributes will require another model to incorporate into existing model and that is how a network model evolves into a simple to complex model.
What is network simulation ?
Experiment on a network model is called simulation, usually softwares are used to conduct experiment on computer network models which are called simulators, the famous simulators are
ns-2, ns-3, OPNET, Qualnet, Jsim, OMNeT++.
Conclusion- In this article, I have explained briefly described system, model, simulation a computer network model hope this will help you to start understanding of network simulation.
______________________________________________
References
[1] http://www.physicalgeography.net/fundamentals/4b.html
