osi model poster

OSI Seven layer model:The OSI (open System Interconnection) seven-layer network model, known as the Open System Interconnect Reference Model, is a logical definition, a specification that divides the network logically into 7 layers. Each layer has relevant, corresponding physical devices, such as routers, switches.

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Reprint: http://www.codeceo.com/article/tcp-ip-osi-model.html#0-youdao-1-61759-32553cecb956bf88a1550052113e506aOSI Reference ModelOSI RM: Open Systems Interconnect Reference Model (open Systeminterconnection Reference Model)The OSI Reference model has the following advantage

(single-choice) repeaters, Ethernet switches, routers work at which level of the OSI model: (4 points) A. Physical layer, link layer, network layer B. Physical layer, network layer, link layer C. Physical layer, link layer, Transport layer D. Link layer, link layer, network layer Analytical: Physical layer: Converts data into electronic signals that can be transmitted through physical media equivalent

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 into several layers, each of which has its own

Everyone who has studied computer networks must know the OSI seven layer protocol model. The OSI layer Seven protocol model (or OSI seven layer model) is a well-defined protocol specification and is considered a standard reference

-famous science and nature, they realized the complexity of the network. Through the use of text reading, image viewing, video playback, download transmission, games, chat and other software tools from text, pictures, sound, video and other aspects to bring people a very rich life and good enjoyment. Network Purpose:What is the purpose of network transmission? That's right: data transfer because of the complexity of the network and a variety of application hardwa

IntroductionOSI (open System interconnect), which is open systems interconnection. Commonly called the OSI Reference Model, is the network interconnection model that the ISO (International Organization for Standardization) organization studied in 1985, which gives you an introduction to the OSI Reference

OSI 7-layer models corresponding to each layer of the OSI model OSI reference model data encapsulation process OSI reference model VS TCP/IP Reference

1. The reference model of Iso/osi has 7 layers , from low to high level: physical layer, Data link layer, network layer, transport layer, Session layer, presentation layer ,Application Layer . The functions of each layer are:(1) Physical layer provides the mechanical, electrical, functional and procedural characteristics required to establish, maintain, and dismantle physical links; Provides information abo

to make a mistake. This layer specifies the topology and provides hardware addressing;Layer 1th Physical layer: At the very bottom of the OSI reference Model. The primary function of the physical layer is to use physical transport media to provide a physical connection to the data link layer for transparent transfer of bitstream.When data is sent, it is transmitted from the seventh layer to the first layer

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-7 structure, and each layer can have several child layers. Nex

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 network environment, no manufacturer can provide a complete set of solutions and all devices

The OSI Reference Model: The ISO/IEC 7498 standard defines a 7-tier architecture model for network interconnection, the Open Systems Interconnect Reference Model.The OSI Reference Model defines the hierarchical structure of open systems, the interrelationships between hierar

segments are separated at this layer. encapsulation is called packet. There are two types of packages. One is data packets, which is the user data transmitted from the upper layer; the other type is route update packets, which is directly sent by the router and used to exchange route information with other routers. The data link layer prepares physical transmission, CRC verification, Error Notification, network topology, and traffic control. The well-known MAC addresses and switches work on thi

Introduction: Before 1990, the hierarchical model dominated by data communication and networking literature was the Open Systems Interconnection (open system Interconnection,osi) model, and now the TCP/IP protocol family became the dominant commercial architecture. An OSI seven-layer

ISO/OSI network models have been porting Android video codec recently. I haven't written a blog for a long time. I want to write something about the network. I first introduced the ISO network model to my shoes. First, I will draw a picture for your understanding. Www.2cto.comBased on the reference model diagram above, I will explain each layer of the ISO/

OSI reference model and troubleshooting The bottom layer of the OSI reference model provides services for its upper layer. Therefore, troubleshooting should also be performed from the bottom layer to the upper layer. If you are an IT support staff member of a company and an employee calls to say that the webpage cann

This section summarizes the overall framework of network communication and its underlying process. We have learned about the creation and application of sockets, in fact, we are only using sockets this tool, the underlying details of which we are shielded. To complete the data transmission through the Internet, in fact, not only software can be solved, but also need to build hardware systems. Therefore, in order to solve this problem, many experts gathered together, these people are har

In the OSI Reference Model, from bottom to top, each layer accomplishes different, targeted functions. 1. Physical layer (physical layers)The physical layer specifies the mechanical, electrical, functional, and process characteristics that activate, maintain, and close communication endpoints. This layer provides a physical medium for the upper level protocol to transmit data. in this layer, the unit of dat