单选题常用来进行网络连通性检查的Ping命令工具,它的工作原理为()。A向目标主机发送UDP Echo Request数据包,等待对方回应UDP Echo Reply数据包B向目标主机发送ICMP Echo Request数据包,等待对方回应ICMP Echo Reply数据包C向目标主机发送UDP Echo Reply数据包,等待对方回应ICMP Echo Request数据包D向目标主机发送ICMP Echo Reply数据包,等待对方回应ICMP Echo Request数据包
单选题
常用来进行网络连通性检查的Ping命令工具,它的工作原理为()。
A
向目标主机发送UDP Echo Request数据包,等待对方回应UDP Echo Reply数据包
B
向目标主机发送ICMP Echo Request数据包,等待对方回应ICMP Echo Reply数据包
C
向目标主机发送UDP Echo Reply数据包,等待对方回应ICMP Echo Request数据包
D
向目标主机发送ICMP Echo Reply数据包,等待对方回应ICMP Echo Request数据包
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