Difference Between OSI and TCP/IP Model – OSI vs TCP/IP

By Balaji

Updated on: February 17th, 2023

The difference between OSI and TCP/IP Model is that OSI is used to provide quality service, whereas TCP/IP does not provide quality service. Establishing a connection between the sender and receiver and smooth data transmission is made easier with computer network models.

Difference Between OSI and TCP/IP Model PDF

The OSI and TCP/IP (Transport Control Protocol/Internet Protocol) Models are the most widely used computer network models. TCP/IP is the communication protocol suite that connects network devices to the Internet, while OSI is a reference model that outlines the functions of a networking system. We’ll look at these two models in depth in this essay. We’ll review their layers and the differences between OSI and TCP/IP Model.

Table of content

  • 1. Difference Between OSI and TCP/IP Model (more)
  • 2. OSI and TCP/IP Model (more)
  • 3. What is OSI Model? (more)
  • 4. What is TCP/IP Model? (more)
  • 5. Key Difference Between OSI and TCP/IP Model (more)

Difference Between OSI and TCP/IP Model

Although there is a notable difference between OSI and TCP/IP Model, there are a few similarities, such as carrying defined standards as a layer, using a simple process to troubleshoot, etc. Let us explore the differences between these in the table provided below.


Difference Between OSI and TCP/IP Model



Developed by ISO.

Developed by ARPANET.

It is only a reference model and no actual implementation is done on this model.

This model is used for the development of the internet.

Stands for: Open System Interconnection.

Stands for: Transmission Control Protocol/Internet Protocol.

The transport layer confirms the delivery of the packets.

The transport layer does not confirm the delivery of the packets.

A vertical approach followed.

A horizontal approach followed.

Presentation and Session layers are different.

Both are the same and are included under the application layer.

It can be used to build models like TCP/IP.

It cannot be used for model building.

The network layer can provide connectionless service as well along with connection service.

The network layer can only provide connectionless service.

There exist 7 layers.

There exist 5 layers.

Used very less compared to TCP/IP.

Highly used.

OSI and TCP/IP Model

The OSI model is a generic one based on the functions of each layer. TCP/IP, on the other hand, is a protocol-based model. A reference model is used for clear communication where a clearly defined and interlinked set of concepts are mentioned.

OSI and TCP/IP reference models are used for standard communication functions.

What is OSI Model?

The OSI model is a logical and conceptual model for network communication utilized by systems capable of interconnection and communication with other systems. The Open System Interconnection (OSI) Model also defines a logical network and covers computer packet transport using several levels of protocols.

  • OSI reference model stands for Open System Interconnection reference model.
  • The ISO introduced this model.
  • This is a reference model and hence is only being used for reference, and no real work or implementation is done on this model.
  • It is used to introduce and teach the concepts related to computer networking.

The Open System Interconnection reference model is a conceptual model used to define computer packet transfer with the help of multiple-layer protocols. The OSI model carries the following layers.

  • Application
  • Presentation
  • Session
  • Transport
  • Network
  • Datalink
  • Physical

What is TCP/IP Model?

TCP/IP is a protocol that specifies how a computer should connect to the internet and how data should be transmitted between them. When many computer networks are connected, it creates a virtual network.

  • Transmission Control Protocol/Internet Protocol (TCP/IP) combines TCP and IP.
  • It was created as a model for providing a very stable, end-to-end byte stream over an unreliable internet network.

It has four layers:

  • Network Access
  • Internet
  • Transport
  • Application


Key Difference Between OSI and TCP/IP Model

The key Difference Between OSI and TCP/IP Model is that the OSI Model is a conceptual framework utilizing which the functioning of a network can be defined, while TCP/IP is a communication protocols suite using which network instruments can be linked to the Internet.

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