Question
list the network layers of the osi model
Answers
GPT-4o mini
The OSI (Open Systems Interconnection) model consists of seven layers, each with specific functions. Here are the layers, listed from the top (Layer 7) to the bottom (Layer 1):
1. **Application Layer (Layer 7)**: Provides network services directly to the user's applications. This layer handles high-level protocols, data representation, and user interface issues.
2. **Presentation Layer (Layer 6)**: Translates data between the application layer and the network. It handles data formatting, encryption, and compression.
3. **Session Layer (Layer 5)**: Manages sessions or connections between applications. It establishes, maintains, and terminates communication sessions.
4. **Transport Layer (Layer 4)**: Responsible for end-to-end communication, error detection, and flow control. It ensures that data is delivered error-free and in the correct sequence.
5. **Network Layer (Layer 3)**: Handles routing of data packets across the network. It manages logical addressing and determines the best path for data transmission.
6. **Data Link Layer (Layer 2)**: Provides node-to-node data transfer and handles error detection and correction from the physical layer. It deals with the MAC (Media Access Control) addressing.
7. **Physical Layer (Layer 1)**: Transmits raw bitstreams over a physical medium. It defines the electrical, optical, and mechanical characteristics for the transmission of data over a physical medium.
These layers work together to facilitate communication between different networked devices.
1. **Application Layer (Layer 7)**: Provides network services directly to the user's applications. This layer handles high-level protocols, data representation, and user interface issues.
2. **Presentation Layer (Layer 6)**: Translates data between the application layer and the network. It handles data formatting, encryption, and compression.
3. **Session Layer (Layer 5)**: Manages sessions or connections between applications. It establishes, maintains, and terminates communication sessions.
4. **Transport Layer (Layer 4)**: Responsible for end-to-end communication, error detection, and flow control. It ensures that data is delivered error-free and in the correct sequence.
5. **Network Layer (Layer 3)**: Handles routing of data packets across the network. It manages logical addressing and determines the best path for data transmission.
6. **Data Link Layer (Layer 2)**: Provides node-to-node data transfer and handles error detection and correction from the physical layer. It deals with the MAC (Media Access Control) addressing.
7. **Physical Layer (Layer 1)**: Transmits raw bitstreams over a physical medium. It defines the electrical, optical, and mechanical characteristics for the transmission of data over a physical medium.
These layers work together to facilitate communication between different networked devices.