Do you know the OSI model and what it represents? Tell about the OSI layers.

The OSI (Open Systems Interconnection) model is a reference network model that describes seven layers of interaction in computer networks. It helps standardize the functions of network protocols and devices.

OSI Layers:

1. Physical — transmission of bits over a physical channel (cables, radio channels).
2. Data Link — organization of frame transmission, error detection and correction at the data link layer (e.g., Ethernet).
3. Network — routing of packets between nodes (e.g., IP).
4. Transport — ensuring reliable data delivery, flow control, and error management (TCP, UDP).
5. Session — establishing, managing, and terminating communication sessions.
6. Presentation — data transformation, encoding, encryption.
7. Application — interface for applications, providing network services (HTTP, FTP, SMTP).

Each layer performs its functions and interacts with neighboring layers, ensuring comprehensive network interaction.