1. What is the physical layer in the Ethernet structure? The physical layer is the lowest layer of the OSI model. The physical layer is responsible for communicating directly with the communication media, encoding and decoding of data, specifying specialized connectors, line voltages, and the like. It defines the unstructured bitstream transmitted on the physical link, the voltage amplitude of the parameter signal, the width of the bits, the mechanical , electrical, functional, and procedural features involved in establishing, maintaining, and disassembling the link. 2. What is the data link layer in the Industrial Ethernet architecture? The data link layer is used to maintain the integrity of data transmission between nodes in the network. It uses cyclic redundancy codes or other frame check codes for error control. Source and destination addresses are added to frames to distinguish source and destination nodes Open to make the data transmission channel a reliable feature channel. 3. What is the industrial Ethernet network layer structure? The network layer is equivalent to a network traffic police, which ensures that all data is transmitted from the sending node to the receiving node over a clear and efficient path. It manages the transmission of data in the network through packet switching, selecting paths, flow control and other means. Funke Plate Heat Exchangers,Funke Phe Plate,Funke Heat Exchangers Plates,Phe Plate For Funke Dongguan Runfengda F&M Co., Ltd , https://www.rfdphe.com