Difference Between TCP/IP and OSI Model

Difference Between TCP/IP and OSI Model

Difference between TCP IP and OSI ModelTCP/IP is a communication protocol that allows for connections of hosts to the internet. OSI, on the other hand, is a communication gateway between the network and the end-users. TCP/IP refers to Transmission Control Protocol used in and by the applications on the internet.

TCP/IP and OSI are the two most widely use networking models for communication. There are some similarities and dissimilarities between them. One of the major difference is that OSI is a conceptual model which is not practically used for communication, whereas, TCP/IP is used for establishing a connection and communicating through the network.

Difference Between TCP/IP and OSI Model

Comparison Chart

BASIS FOR COMPARISON SINGLE INHERITANCE MULTIPLE INHERITANCE
Definition A derived class used to inherit properties and their nature from a single parent class that has all the features required for the program to run. A type used by the principal object-oriented computer programming languages where the characteristics that exist within the parent object or class can get transmitted to the new object or class.
Implementation Class derived_class : access_specifier base class Class derived _class: access_specifier base_class1, access_specifier base_class2, ….
Access The derived class always accesses the features of the file they get associated with. The derived class gets access to all the features of the base classes it has connected.
Base The derived class gets a single base. The derived class gets two or more than two base classes.
Visibility Public, Private, Protected Public, Private, Protected
Run time Require a small amount of run time overhead Require additional runtime overhead as compared to single inheritance
Behavior The behavior stays the same as the parent. The behavior becomes a mixture of both parents.




The TCP/IP Model was developed before the OSI Model, and hence, the layers differ. Concerning the diagram, it is clearly seen that TCP/IP Model has four layers namely, Network Interface, Internet, Transport, and Application Layer. Application Layer of TCP/IP is a combination of Session, Presentation, and Application Layer of the OSI Model.

Definition of TCP/IP MODEL

TCP (Transmission Control Protocol) /IP (Internet Protocol) was developed by the Department of Defense (DoD) project agency. Unlike OSI Model, it consists of four layers, with each having its protocols. Internet Protocols are the set of rules defined for communication over the network. TCP/IP is considered the standard protocol model for networking. TCP handles data transmission and IP handles addresses.
The TCP/IP suite is a set of protocols that includes TCP, UDP, ARP, DNS, HTTP, ICMP, etc. It is robust, flexible and mostly used for interconnecting computers over the internet.
The layers, TCP/IP, has are:

  • Network Interface Layer,
  • Internet Layer,
  • Transport Layer,
  • Application Layer.

Definition of OSI Model

OSI (Open System Interconnect) model was introduced by ISO (International Standard Organization). It is not a protocol but a model that is base on the concept of layering. It has a vertical set of layers, each having different functions. It follows a bottom-up approach to transfer the data. It is robust and flexible, but not tangible.
The seven layers of the model are:

  • Application Layer,
  • Presentation Layer,
  • Session Layer,
  • Transport Layer,
  • Network Layer,
  • Data Link Layer,
  • Physical Layer.