IP数据报的分段和重装配要用到报文头部的报文ID、数据长度、段偏置值和M标志4个字段,其中( )的作用是指示每一分段在原报文中的位置:若某个段是原报文的最后一个分段,其( )值为“0”。
问题1选项
A.段偏置值
B.M标志
C.报文ID
D.数据长度
问题2选项
A.段偏置值
B.M标志
C.报文ID
D.数据长度
正确答案及解析
正确答案
解析
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