Neusoft Institute of Information Date: 25. Feb 2005 IT Education & Training Neusoft Institute of Information Date: 08.Mar.2010 IT Education & Training IT Education & Training 计算机网络原理与应用 Neusoft Institute of Information Date: 25. Feb 2005 IT Education & Training Neusoft Institute of Information Date: 08.Mar.2010 IT Education & Training 复习 使用点对点信道的数据链路层 数据链路和帧 封装成帧、透明传输和差错检测 点对点协议PPP 特点 帧格式 工作状态 提问：P105习题第1、4题Neusoft Institute of Information Date: 25. Feb 2005 IT Education & Training Neusoft Insti
