Among the following basic features(or properties) of the data link layer, which is the wrong description
选项:
A:Adjacent high layer is the network layer;
B:Data link can be established after the physical connection is released;
C:Adopting the method of error control and flow control to make the physical line with errors become the physical link without errors;
D:The data transmission unit of the data link layer is a frame
发布时间:2024-04-14 14:33:48