文章首发 原文地址 开发式系统通信互联(OSI)模型开发式系统通信互联(OSI)模型定义了一种实现了在层之间实现网络协议,并且控制一层传递到下一层的网络架构。当今它最主要的用途就是作为教学工具。它在概念上将…
The lower layers deal with electrical signals, chunks ofbinary data, and routing of these data across networks. Higher levels cover network requests and responses, representation of data, and network protocols, as seen from a user's point of view. Lifewire / Colleen Tighe The OSI model was or...
The 7 layers of the OSI model The OSI model divides networking up into a “vertical stack” consisting 7 layers. Networking starts on the application layer at the top (Layer 7) and proceeds to the bottom layer (Layer 1). It is then passed back up the same hierarchy. ...
At which layers of the OSI model do WANs operate? (Choose two.)() A. application layer B. session layer C. transport layer D. network layer E. datalink layer F. physical layer 相关知识点:
L., "The Upper Layers of the ISO/OSI Reference Model (Part 2)", computer Standards and Interfaces, Vol. 5, No.2, 1986, pp 65-75.Wilfred A. Melendez et al., " The Upper Layers of the ISO/OSi Reference Model (Part II), " Computer Standards and Interfaces, vol. 5, No. 2, ...
So, in a sense, the OSI model is sort of a standard of standards. The Seven Layers of the OSI Model LayerNameDescription 1 Physical Governs the layout of cables and devices such as repeaters and hubs. 2 Data Link Provides MAC addresses to un...
IEEE 802 divides the data link layer into two sublayers: [27] Medium access control (MAC) layer – responsible for controlling how devices in a network gain access to a medium and permission to transmit data. Logical link control (LLC) layer – responsible for identifying and encapsulating net...
OSI模型的数据链路层(Data Link Layer)(即第2层)负责为数据包添加头和尾,为数据包可以转换为适合于局域网和广域网线路传输的二进制格式做准备。第2层可以分为两个功能子层,上子层是逻辑链路控制(Logical Link Control,LLC)子层,并在IEEE 802.2规范中定义,它与数据链路层之上的网络层(NetworkLayer)通信。LLC...
Objectives What is the purpose of a Network model? What are the layers of the OSI model? What are the characteristics of each layer of the OSI model? How does the TCP/IP stack compare to the OSI model? What are the well-known TCP and/or UDP port numbers for a given collection of ...
The Seven Layers of the OSI Model The Importance of the OSI Model OSI Model vs. TCP/IP Model Radware Solutions for Network and Application Security The OSI (Open Systems Interconnection) Model is a conceptual framework that standardizes and defines the functions of a telecommunication or networ...