Does the network architecture of this computer have OSI?

There are 7 layers of OSI: Layer 1: Physical Layer 2: Data Link Layer 3: Network Layer 4: Transport Layer 5: Session Layer 6: Presentation Layer 7: Application Layer.

Physical layer. physical layer)

Function: Provides a way to establish, maintain, and release physical connections to enable bitstreaming on physical channels.

Transmission. Data link layer.

data link layer)

Function: It is a network layer that implements reliable data transmission on less reliable physical links. network layer)

Function: Implement packets between source and destination nodes on different networks.

Transmission (Data Link Layer.

It is only responsible for link management and frame transmission between two adjacent nodes in the same network), that is, to complete the communication sub.

Control of the normal operation of the network.

Transport layer. transport layer)

Function: Realize the end-to-end reliable transmission of communication subnet (to ensure the quality of communication) session layer

Function: Provides a user-facing connectivity service and is necessary to provide effective organization and synchronization of session activity.

means to provide control and management for data transfer.

Presentation layer functions: data encoding, data compression, data encryption, etc.

Application layer.

Physical layer bit streaming.

The data link layer provides media access, link control, and more.

Network layer addressing and routing.

Transport Layer establishes end-to-end connectivity to the host.

Session layer establishes, maintains, and manages sessions.

The presentation layer deals with data formats, data encryption, and more.

The application layer provides inter-program communication.

OSI is an abbreviation for Open System Interconnect. Generally known as the OSI reference model, it is a network interconnection model studied by the ISO (International Organization for Standardization) organization in 1985. This architecture standard defines a seven-layer framework for network interconnection (physical, data link, network, transport, session, presentation, and application layers) for network interconnection, known as the ISO Open Systems Interconnection Reference Model.

The functions of each layer are further defined in detail under this framework to enable interconnectivity, interoperability, and application portability in an open systems environment. [