OSI full form

What is the full form of OSI?


  • Open Systems Interconnection

What does OSI mean?

OSI is an effort to standardize networking that was started in the year 1977 by the ISO. 

It is a conceptual model so that it characterizes and standardizes for the communication functions such as the telecommunication or computing system without regard to its internal structure and technology of a system. 

The OSI model comprises seven layers following below:

  • Layer 1 -  Physical Layer
  • Layer 2 - Data link layer 
  • Layer 3 - Network layer 
  • Layer 4 - Transport Layer 
  • Layer 5 - Session layer 
  • Layer 6 - Presentation layer
  • Layer 7 - Application layer

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