The Distinct Pros and Cons of the OSI Reference Model


osi model

The OSI Reference Model stands for the Open Systems Interconnection model. It has been guiding developers for over three decades in making a precise framework to explain various networking functions. The model divides the functions into seven layers, and each layer has a distinct feature or work. The work, after completion, transmits data to further layers. If you have to compose an academic work on the OSI model, you can seek professional assignment help for it. In this article, you'll read more about this innovative model and its advantages and disadvantages.


What Is the OSI Model?

This model explains the seven distinct layers computers use to communicate over a specific network. The major telecommunication and computer companies adopted the model for network communication in the early 1980s. 


Today's internet is not fully based on this model. It is according to a simpler TCP/IP model. But the OSI 7-layer model is still extensively utilized because it enables visualization of how networks operate. It also allows isolating and resolving network issues. 


The Pros and Cons of the OSI Model

The primary purpose of the OSI model is to process communication between two machines operating on two distinct platforms. Here are some of its major pros and cons.



There are various advantages of this model. They are as follows.


  • Network support – Since the model is generic by default; it implies that many device manufacturers support it. OSI is the standard model that various computer networks use.
  • No effect of changes in one layer – Every layer in this model is separated from the other. So, changes in one layer do not impact the other layer. But it's not fully guaranteed in case there are modifications in the layer interface. 
  • Identification of layer – Every OSI model layer has assigned services, interfaces, and protocols. But the OSI model can identify the task in every layer. So, every device that works with this model will be compatible with one another. 
  • Flexible in nature – There's a high degree of flexibility in the OSI model. It can function with both connectionless and connection-oriented services. In case there's a need to maintain reliability, connection-oriented services are used. On the other hand, if the data transmission speed is of concern, the connectionless services option will be the ideal one.
  • Easy troubleshooting – Every layer in this model is distinct from the other. Thus, it leads to easy problem fixing. In the event of failure, a network administrator can recognize the problem efficiently by looking at every layer. So, it minimizes the wastage of time by analyzing the whole network. 



Like any other model, the OSI also has various down points. If you need more assistance understanding it, you can speak to an expert assignment help provider. Some cons of the OSI model are as follows.


  • Practical employment of the model is nearly impossible – OSI is a fully theoretical model. So, it is close to impossible to implement it in the real world. If a possibility arises, the cost involved in it will be exorbitant.
  • Absence of readiness – Many companies are using the TCP/IP model as its much older than ISO. So, they don't want to adapt to a new model. This unwillingness to adapt is also a major con. 
  • Ineffective compared to TCP/IP model – The OSI model hasn't been able to fulfil the practical expectations. Thus, it's not regarded as effective as TCP/IP model. This factor has led most people to regard the OSI model as ineffective. 
  • The complexity of structure – The OSI model has a complicated design because of the various layers. These layers aren't optimized. Apart from that, the duplication of services or more than two layers processing a single task also makes it complex. 
  • The inability of the layers to work parallelly – There are also some complexities in the OSI model while working. Each of its layers cannot work parallelly till the data gets past the prior layer.


Final Words

Hopefully, you must have gained good knowledge about the OSI model. Now you know why this model isn't as popular as the TCP/IP one. If you want to know about it in more detail, seek expert assignment help online. The writers will resolve your doubts and help you submit great work.

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