pdu osi

The OSI Seven-layer model enables reliable communication between different networks of different systems through seven hierarchical structural models, so its main function is to help different types of hosts achieve data transfer.The nodes that complete the relay function are often referred to as trunking Systems. In the OSI seven layer model, the relay systems at different tiers have different names.The le

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 networks formed by devices and application software of different manufacturers. Now, this model has become a major structural model for commun

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 Layer-7 model, the relay systems at different layers have different names. The layer at

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 Layer-7 model, the relay systems at different layers have different names. The layer at

OSI (open System Interconnection), open Systems Interconnect Reference Model. From bottom to top seven-tier model features and their representative protocols: Physical Layer (physical) : 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. bit, bit. Typical protocol representative

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 Layer-7 model, the relay systems at different layers have different names. The layer at

1. Relationship between the OSI seven layer and the TCP/IP four layer 1.1 OSI introduces the concepts of services, interfaces, protocols, and hierarchies, and TCP/IP builds the TCP/IP model using these concepts from OSI. 1.2 OSI first has the model, then has the agreement, first has the standard, then carries on the pr

OSI Layer-7 network model and TCP/IP layer-4 Network Model Original by Mu ant Community Www.mumayi.net, this post address: http://bbs.mumayi.net/viewthread.php? Tid = 932283 1. OSI network layered Reference Model Network Protocol designers should not design a single, huge protocol to provide complete details for all forms of communication, but should divide communication problems into multiple small pro

First, the actual application of the network classificationBlock data streams: FTP, TFTP, inventory updateNo direct human interaction requiredBandwidth is important, but not a critical factorInteractive Data Flow: Inventory queries, database updatesInteractiveResponse timeFacts app Data flow: VoIP videoPeople-to-people interactionEnd-to-end latency is criticalSecond, network topology classification650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M01/74/A5/wKioL1YlnlziS4lHAACtxQp5eLI606.jpg

Bo is engaged in a FPGA, has not really studied Ethernet-related technology, and now finally can calm down the heart to learn, I hope that they can more in-depth grasp the most basic communication interface technology. Here's the start.I. OSI Reference ModelToday we first learn about Ethernet is the most basic and important knowledge--osi Reference model. 1. Source of the OSIOSI (Open System Interconnect),

TCP/IP layer-4 model and OSI Layer-7 ModelTable 1-1 is the table corresponding to the TCP/IP layer-4 model and the OSI Layer-7 model. We map the OSI Layer-7 network model with the Linux TCP/IP layer-4 concept model, and then classify various network protocols.Table 1-1 TCP/IP layer-4 model and OSI Layer-7 Model

650) this.width=650; "Src=" https://mmbiz.qlogo.cn/mmbiz/ iahl5mqlicpyokjw2hkdibfa8gpx7ygunoeyapztjfesiicukyzdmoqunb3yrx69mjiblcdm1gicwb9ica0q3wbtysq/0 "style=" Height: auto; "alt=" 0 "/>Content Introduction1. Preface2. Part One lesson two: the creation of the Internet, OSI seven-layer model3, the first part of the third lesson trailer: OSI first layer, connect your machinePrefacePS: After doing the syllabu

LAN and WAN communications are guided by a network communication model, open Systems Interconnection (OSI). The OSI model is the product of two standardization organizations, ISO, and the American National Standards Association (ANSI). ISO represents the development of more than 100 countries in economic, humanities, scientific and technological standards, and ANSI has established standards for commercial p

We can understand the client and the remote server as host A and Host B, the user and host a can interact with the application in host A, and the interaction between host A and Host B is through the computer network communication.Each machine in the network is called a node. Most nodes are computers, in addition, printers, routers, bridges, gateways, and dumb terminals are also nodes.People communicate with each other through a language, and the hosts in the network communicate through "language

OSI Model data unit layer ( layer features and common protocols Host Layer DataData Application LayerApplication Layer Network processes to applications, for specific application environments.HTTP, HTTPS, FTP,SSH, SMTP, Presentation LayerPresentation Layer Data presentation layer for encryption or decryption of data session layer Session layer communicati

The establishment of the seven-tier model is mainly to solve the compatibility problems encountered in heterogeneous network interconnection. Its greatest advantage is to distinguish between the three concepts of service, interface and protocol, and to share different functions of the different functional modules of the network. That is, the original intention is to solve the compatibility, but when the network developed to a certain scale, security issues become prominent. So there has to be an

The OSI reference model has many similarities with the TCP/IP reference model. They are based on the concept of an independent protocol stack. In addition, the features of the layer are similar. For example, in the two models, the transmission layer and above all provide end-to-end and network-independent transmission services for processes that want to communicate. These layers form a transport provider. Similarly, in both models, the former users at

Tags: POJ RMI computer program TCP/IP protocol for network efficiency NAL BBS First layer: Physical layer second layer: Data link layer 802.2, 802.3ATM, HDLC, FRAME RELAY Third layer: Network layer IP, IPX, ARP, APPLETALK,ICMP layer Fourth: Transport layer TCP, UDP, SPX RPC,SQL, NFS, X WINDOWS,ASP layer Sixth: Presentation layer ASCLL, PICT, TIFF,JPEG MIDI, MPEG layer Seventh: Application layer HTTP,FTP, SNMP, etc. https://www.nowcoder.com/questionTerminal/7cf6990ea2e345b6bc96d882944c4d6b T

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 computersImplement inter-computing session controlPresentation LayerData format conversionCompressi

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. OSI Seven layer model is a framework design meth