以下关于HDLC协议的叙述史论错误的是( )
- A.接收器收到一个年确的信息帧，若顺序号在接收窗口内，则可发回确认帧
- B.发送器每接收到一个确认，就把窗口向前滑动到确认序号处
- C.如果信息帧的控制字段是8位，则发送顺序号的取值范围是0-127
- D.信息频和管理帧的控制字段都包含确认顺序号
正确答案及解析
正确答案
解析
发送序号的取值范围是0-7。
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