What is osi-model?
Open Systems Interconnection model—a conceptual framework that characterizes and standardizes the communication functions of a telecommunication or computing system.
The OSI Model defines seven layers that computer systems use to communicate over a network. It was the first standard model for network communications, adopted by all major computer and telecommunication companies in the early 1980s. Each layer provides a specific service to the layer above it and utilizes the services of the layer below.
graph LR
Center["What is osi-model?"]:::main
Rel_tcp_ip["tcp-ip"]:::related -.-> Center
click Rel_tcp_ip "/terms/tcp-ip"
Rel_model_context_protocol["model-context-protocol"]:::related -.-> Center
click Rel_model_context_protocol "/terms/model-context-protocol"
Rel_network_protocols["network-protocols"]:::related -.-> Center
click Rel_network_protocols "/terms/network-protocols"
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🧠 Prueba de conocimiento
🧒 Explícalo como si tuviera 5 años
The OSI model is like a 7-story office building where each floor has a specific job. The bottom floor handles the cables, the middle floors handle how the mail is addressed, and the top floor is where the finished letter is read by the user. Every floor has to work for the email to be sent!
🤓 Expert Deep Dive
The seven layers are: 1. Physical (bits), 2. Data Link (frames), 3. Network (packets), 4. Transport (segments), 5. Session, 6. Presentation, 7. Application. While the TCP/IP stack is more commonly used in practice, the OSI model remains the gold standard for conceptualizing protocol modularity and troubleshooting.