传输层(Transport Layer):传输表头(TH)加至资料以形成封包。传输表头包含了所使用的协定等传送资讯。例如:传输控制协定(TCP)、UDP、DCCP、SCTP、TLS/SSL等。 网络层(Network Layer):决定数据的路径选择和转寄,将网络表头(NH)加至数据包,以形成封包。网络表头包含了网络资料。例如:互联网协议(IP)、ICMP、IGMP、RAR...
The most popular packet-based structure of layers, or protocol stack, is called the OSI model (Open System Interconnection), which was created, oddly enough by the reverse acronym, the ISO (International Organization for Standardization). It defines 7 layers. The user interface (Application Layer...
The following diagram illustrates the OSI model.Windows network drivers implement the bottom four layers of the OSI model.Physical layerThe physical layer is the lowest layer of the OSI model. This layer manages the reception and transmission of the unstructured raw bit stream over a physical...
OSI model charts come in different shapes and sizes, but they all boil down to the seven layers of the OSI model in order. To gain an understanding of what the charts actually mean, it's helpful to focus on four things: What data unit is associated with each layer? What protocols are...
model, as shown in the diagram above, the application and network access layer are broken down to define more functions. The application layer is broken into the application, presentation and session layers, while the network access layer is broken up into the data link and the physical layers...
A Complete Guide to Open Systems Interconnection model (OSI model). 7 layers of the OSI Model are explained with functionalities and roles of each layer.
There's also a somewhat simpler four-layer Defense Advanced Research Projects Agency (DARPA) model that maps to the OSI model, but the OSI version is the most commonly referred to. I'll reference both models when discussing the various layers. The following diagram compares the OSI and DARPA...
8、pdu 封装过程:解封装过程每一层对应的pdutcp/ip参考模型的层次结构tcp/ip报文封装tcp/ip报文格式ip头部(报头)格式tcp数据段格式tcp头部结构udp数据段格式udp数据段格式常见协议和对应的端口号例题:1,segmention of a data stream happens at which layer of the osi model? a.physical b.data link c.network...
A well-defined interface between each pair of adjacent layers defines the services offered by the lower layer to the higher one and how those services are accessed." The following diagram illustrates the OSI reference model.In Windows 2000 and later, network drivers implement the bottom four ...
Protocol Data Unit PDU SI reference model, the exchangeof information between peer layer Protocol Unit are collectively referred to asProtocol Data Unit (PDU, Protocol Data Unit). And the transport layer and underthe layers of PDU and their specific name: transport layer - (Segment) networklayer...