https://xiaokeqing.cn/tags/mac/Recent content in MAC on xiaokeqingHugozh-cnTue, 20 Oct 2026 17:00:00 +0800https://xiaokeqing.cn/posts/data-link-layer/Tue, 20 Oct 2026 17:00:00 +0800https://xiaokeqing.cn/posts/data-link-layer/数据链路层的职责：帧的封装与解封装、差错检测、MAC 地址与以太网帧格式。