Layer 2 Switching A Layer 2 device works at the second layer of the OSI model and forwards data packets based on media access control (MAC) addresses. Ports on a Layer 2 device send and receive data independently and belong to different collision domains. Collision domains are isolated at the...
Layer 2 Switching A Layer 2 device works at the second layer of the OSI model and forwards data packets based on media access control (MAC) addresses. Ports on a Layer 2 device send and receive data independently and belong to different collision domains. Collision domains are isolated at the...
业内借鉴计算机网络通信体系架构的OSI模型(Open System Interconnection Reference Model,即开放式系统互联通信参考模型),将区块链逻辑架构划分为三层——Layer0、Layer1和Layer2。 1) Layer0:对应OSI模型的底层协议,大致包括物理层、数据链路层、网络层和传输层。 2) Layer 1:大致包括数据层、共识层和激励层。我们所...
The lowest layer of the OSI Model is concerted with electrically and optically transmitting raw unstructured data bits across the network from physical layer of the sending device to the physical layer of receiving device. It can include specifications such as voltages. pin layout, cabling and radio...
The data link layer addresses issues of data frame collision, as mentioned above. Therefore, one of its functions determines which devices have control when two or more devices share the same link. Data link layer protocols Like all layers in the OSI model, there are several protocols that ope...
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...
The international engineering organization IEEE saw the need to regulate for local networks also competing access to a transmission medium, which is not foreseen in the OSI model. Common hardware on this layer: Bridge, Switch (Multiport bridge) OSI Layer 2 - Data Link Layer The data link ...
The layer is located between the data link layer and the transport layer as layer 3 in the OSI model. What are the other layers in the OSI model? Besides the OSI network layer, there are six layers in the OSI model: thephysical layer, thedata link layer, the transport layer, thesessio...
正确答案:D解析:Explanation:CDP is a device discovery protocol that runs over Layer 2 (the data link layer) on all Cisco-manufactured devices (routers, bridges, access servers, and switches) and allows network management applications to discover Cisco devices that are neighbors of already known dev...