请问全双工 半双工还是单工是 osi 中的哪一层决定的? - V2EX
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zhoujianqingz
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请问全双工 半双工还是单工是 osi 中的哪一层决定的?

  •  
  •   zhoujianqingz 2024-06-12 19:52:51 +08:00 2344 次点击
    这是一个创建于 552 天前的主题,其中的信息可能已经有所发展或是发生改变。
  • osi
  • 物理层
  • 双工
    7 条回复    2024-06-13 03:18:10 +08:00
    yyzh
        1
    yyzh  
       2024-06-12 19:54:22 +08:00 via Android   1
    1
    zhoujianqingz
        2
    zhoujianqingz  
    OP
       2024-06-12 19:58:00 +08:00 via iPhone
    @yyzh 物理层吗?我也这么觉得,但是答案不是
    yyzh
        3
    yyzh  
       2024-06-12 20:07:09 +08:00 via Android
    IvanLi127
        4
    IvanLi127  
       2024-06-12 22:11:11 +08:00
    话说答案是啥? 下层不支持全双工的话,上层咋支持,尤其是下层只能单工时,咋双得起来?我感觉得是物理层。难道这个通信模式是特定层的概念?
    LeoJ
        5
    LeoJ  
       2024-06-12 22:47:40 +08:00
    双工协商是二层啊 链路层
    bao3
        6
    bao3  
       2024-06-13 01:45:29 +08:00
    PHY 决定的
    om2mo
        7
    om2mo  
       2024-06-13 03:18:10 +08:00
    是以太网协议决定的不是 tcp/ip 协议
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