📜  为什么只有数据链接添加预告片 - 任何代码示例

📅  最后修改于: 2022-03-11 14:57:07.346000             🧑  作者: Mango

代码示例1
Data Link layer protocols add a trailer to the end of each frame.
The trailer is used to determine if the frame arrived without error.
This process is called error detection. 
Note that this is different from error correction.