A layer refers to a stratum or sheet that covers or lies over something, often used in physical or conceptual contexts, while a level denotes a specific stage or degree in a hierarchy or process.
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...
IP address:An IP address is the unique number assigned to every network device in an Internet Protocol (IP) network; each IP address identifies the device’s host network and its location on the network. When one device sends data to another, the data includes a “header” that includes th...
Each layer of the OSI model interacts with the layer directly above and below it, encapsulating and transmitting data in a structured manner. This approach helps network professionals troubleshoot issues, as problems can be isolated to a specific layer. The OSI model serves as a universal language...
In our days the Internet holds great importance for the economy, education, business, and probably all other aspects of our society, therefore becoming an irreplaceable tool for work and for staying informed, therefore we need to better understand what is SSL Vulnerability in Computer Network Scienc...
In the 7-layer OSI model (see below), the network layer is layer 3. The Internet Protocol (IP) is one of the main protocols used at this layer, along with several other protocols for routing, testing, and encryption. Suppose Bob and Alice are connected to the same local area network ...
In the 7-layer OSI model (see below), the network layer is layer 3. The Internet Protocol (IP) is one of the main protocols used at this layer, along with several other protocols for routing, testing, and encryption. Suppose Bob and Alice are connected to the same local area network ...
Application, presentation, session, transport, network, data link, physical
Ethernet hubs operate asLayer 1devices in theOSI model. Passive, Active, and Intelligent Hubs Three basic types of hubs exist: Passive hubsdon't amplify the electrical signal of incoming packets before broadcasting them out to the network. ...
Layer 1:The physical layer comprises the physical assets, like routers and USB cables, that convert data into strings of 1s and 0s for transmission to higher layers. The OSI model focuses on providing a list of tasks for engineers to complete in building each layer of a network architecture...