In a TCP/IP network， which of the following protocols is involved when a user issues a ping command？（）
- A、TCP
- B、UDP
- C、ICMP
- D、SMTP
正确答案:C
答案解析:有
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IBM认证考试
IBM认证考试
In a TCP/IP network， which of the following protocols is involved when a user issues a ping command？（）
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