7 layers of osi model

1. Definition: OSI (Open System Interconnection), an Open System Interconnection Reference Model, which logically divides the network protocol into seven layers. Each layer has related and corresponding physical devices. For example, a conventional router is a layer-3 switching device and a conventional switch is a layer-2 switching device. The

Basic OSI Layer-7 model knowledge and common applications at each layer (1) OSI Open Source Initiative (OSI) is a non-profit organization designed to promote the development of Open Source software. The full name of the OSI Refer

The OSI Layer-7 model enables reliable communication between different networks of different systems through seven hierarchical structural models. Therefore, its most basic function is to help different types of hosts transmit data. The node that completes the relay function is usually called a relay system. In the OSI

The OSI Layer-7 model enables reliable communication between different networks of different systems through seven hierarchical structural models. Therefore, its most basic function is to help different types of hosts transmit data. The node that completes the relay function is usually called a relay system. In the OSI

OSI Layer-7 Model OSI: Open System Interconnection Reference ModelProposed by ISO in 1984, the objective is to establish a general network standard. Application LayerProvides user interfaces for users to access the network.For example, email, WWW, and network file access.Session LayerManage sessions between computers

The OSI Layer-7 model enables reliable communication between different networks of different systems through seven hierarchical structural models. Therefore, its most basic function is to help different types of hosts transmit data. The node that completes the relay function is usually called a relay system. In the OSI

The OSI Layer-7 model enables reliable communication between different networks of different systems through seven hierarchical structural models. Therefore, its most basic function is to help different types of hosts transmit data. The node that completes the relay function is usually called a relay system. In the OSI

The OSI Layer-7 model enables reliable communication between different networks of different systems through seven hierarchical structural models. Therefore, its most basic function is to help different types of hosts transmit data. The node that completes the relay function is usually called a relay system. In the OSI

The OSI Layer-7 model enables reliable communication between different networks of different systems through seven hierarchical structural models. Therefore, its most basic function is to help different types of hosts transmit data. The node that completes the relay function is usually called a relay system. In the OSI

The OSI Layer-7 model enables reliable communication between different networks of different systems through seven hierarchical structural models. Therefore, its most basic function is to help different types of hosts transmit data. The node that completes the relay function is usually called a relay system. In the OSI

Source: Network Copyright: www.networkdictionary.com The OSI Open System Interconnection model is a reference model proposed by the International Organization for Standardization (ISO) in 1984. As a conceptual standard framework for network communication, this model makes it possible to conduct communication on network

Introduction to the OSI Layer-7 Model OSI is an open reference model for System Interconnection. It is a well-defined protocol specification. The OSI model has a layer-

The OSI Layer-7 model is complex due to the entire network connection process, including the interconnection between hardware, software data packets, and applications. If you want to write a program that concatenates all functions of the Internet, you must rewrite the entire program when a problem occurs in a small link. Therefore, we divide the entire network in

1.1Network layering This course mainly introduces two different layers:OSILayered Model andCiscoLayer-3 model.Advantages of layering:1. Divide complex networks into layers that are easier to manage.2. When a layer is changed, other layers are not affected, which makes the applicationProgramDevelopers can perform specific design and development.3. In today's ne

OSI has 7 layers, application layer, presentation layer, Session Layer, transmission layer, data link layer, and physical layer. The application layer is the only window in which the network can provide application services to end users. Its purpose is to support the requirements of applications connected to users. Due to different user requirements, the applic

Application layer: HTTP Application layerPresentation layer: Coding presentation LayerSession Layer: Port Session LayerTransport Layer: TCP/UDP Protocol Transport LayerNetwork layer: IP tag +--Network layer--+ Network layerData Link layer: Computer MAC address Tag |　　　| Data Link LayerPhysical layer: Network cable, Crystal Head, computer socket | +----> Physical layer+------------------------------------->+"The bottom layer serves the upper layer and is transparent, and the corresponding protoco