OSI七层模型 (Open System Interconnect),全称为开放系统互连参考模型,是国际标准化组织(ISO)和国际电报电话咨询委员会(CCITT)联合制定的开放系统互联参考模型,为开放式互联信息系统提供了一种功能结构的框架。它从低到高分别是:物理层、数据链路层、网络层、传输层、会话层、表示层和应用层。 例如:随着人工智能的不...
At Layer 1, the Physical layer of the OSI model is responsible for the ultimate transmission of digital databitsfrom the Physical layer of the sending (source) device over network communications media to the Physical layer of the receiving (destination) device. Examples of layer 1 technologies in...
The transport layer manages the delivery and error checking of data packets. It regulates the size, sequencing and ultimately the transfer of data between systems and hosts. Once of the most common examples of transport layer is TCP or the Transmission Control Protocol. Session The session layer ...
Examples of protocols operating at the Application Layer includeHypertext Transfer Protocol (HTTP)for web browsing, File Transfer Protocol (FTP) for file transfers, Simple Mail Transfer Protocol (SMTP) for email services, and Domain Name System (DNS) for resolving domain names to IP addresses. Thes...
This tutorial explains the OSI reference model. Learn the seven layers of the OSI model and the functions of each layer in detail through examples.
examples of data link protocols are HDLC and ADCCP for point-to-point or packet-switched networks and Aloha for local area networks. On IEEE 802 local area networks, and some non-IEEE 802 networks such as FDDI, this layer may be split into a Media Access Control (MAC) layer and the ...
Layer 5. The session layer Thesession layersets up, coordinates and terminates conversations between applications. Its services include authentication and reconnection after an interruption. This layer determines how long a system will wait for another application to respond. Examples of session layer pro...
An application running on your computer can communicate with other layers in the OSI model, but the interface runs on the application layer. For example, anemail clientyou use to send messages runs on layer 7. When a message arrives at the destinationhost, this layer then presents it to the...
Layer 7: Application Human/computer interactions happen here. A user works directly with some type of software, such as a web browser. Layer 6: Presentation Two devices prepare to connect. This is a bit like a preparation area before the real work begins.Encryptionanddecryptiontasks happen here...
Layer 2 Data Link examples include PPP, FDDI, ATM, IEEE 802.5/ 802.2, IEEE 802.3/802.2, HDLC, Frame Relay. OSI Layer 1: Physical OSI Model Layer 1, or the physical layer, conveys the bit stream—electrical impulse, light, or radio signal—through thenetworkat the electrical and mechanical...