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What is the OSI model? What is the application layer?
sobes.tech AI
Answer from AI
The OSI (Open Systems Interconnection) model is a reference model for describing network interactions, divided into 7 layers:
- Physical
- Data Link
- Network
- Transport
- Session
- Presentation
- Application
The Application layer is the topmost layer of the OSI model. It is responsible for interaction with end-users and applications. Protocols and services that provide network capabilities to applications are implemented at this level, for example:
- HTTP for the web
- FTP for file transfer
- SMTP for email
Example: when you open a web page, the browser uses the HTTP protocol, which operates at the OSI application layer, to request and receive data from the server.