假设一个IP数据段的长度为4000B，要经过一段MTU为1500B的链路，该IP数据报必须经过分片才能通过该链路，以下关于分片的播述中，正确的是()
- A.该原始IP数据报是IPv6数据报
- B.分片后的数据报将在通过该链路后的路由器进行重组
- C.数据报需分为三片，这三片的每长度为4000B
- D.分片中的最后一片。标志位flag为O, Offset 字段为370
正确答案及解析
正确答案
解析
flag字段包括三位，最低位MF=0表示最后一片，Offset字段表示在原分组中的位置（单位8字节），第三片（最后一片）的位置在(1480+1480)÷8=370。
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