單項(xiàng)選擇題

常用來(lái)進(jìn)行網(wǎng)絡(luò)連通性檢查的Ping命令工具,它的工作原理為()。

A.向目標(biāo)主機(jī)發(fā)送UDP Echo Request數(shù)據(jù)包,等待對(duì)方回應(yīng)UDP Echo Reply數(shù)據(jù)包
B.向目標(biāo)主機(jī)發(fā)送ICMP Echo Request數(shù)據(jù)包,等待對(duì)方回應(yīng)ICMP Echo Reply數(shù)據(jù)包
C.向目標(biāo)主機(jī)發(fā)送UDP Echo Reply數(shù)據(jù)包,等待對(duì)方回應(yīng)ICMP Echo Request數(shù)據(jù)包
D.向目標(biāo)主機(jī)發(fā)送ICMP Echo Reply數(shù)據(jù)包,等待對(duì)方回應(yīng)ICMP Echo Request數(shù)據(jù)包

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