ICMP协议属于因特网中的（ ）协议，ICMP协议数据单元封装在（ 此空作答 ）中传送。
- A.以太帧
- B.TCP段
- C.UDP数据报
- D.IP数据报
正确答案及解析
正确答案
解析
ICMP是TCP/IP协议族的一个子协议，属于网络层协议，主要用于在主机与路由器之间传递控制信息，包括报告错误、交换受限控制和状态信息等，和TCP 、UDP 、IGMP等协议一样，ICMP协议使用IP数据报传送数据。
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