Which of the following is the fifth layer of the OSI model?

The fifth layer of the OSI model is the Session Layer. It helps start, manage, and end communication sessions between devices.

The OSI (Open Systems Interconnection) model has 7 layers. Each layer has a specific job in the communication process.

Layer 5: Session Layer is responsible for:

• Starting communication sessions


• Maintaining the connection while data is exchanged


• Ending the session once the task is complete

Quick OSI Layer order (top to bottom):

1. Application


2. Presentation


3. Session ← This is the 5th layer


4. Transport


5. Network


6. Data Link


7. Physical

Knowing the OSI layers helps in understanding how computers and networks communicate step by step. The Session layer is key for organized, stable communication.