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【单选题】
主机需要在什么情况下使用ARP协议( )。
A.
知道本网段某台主机的IP地址,而想获取其对应的MAC地址
B.
知道本网段某台主机的IP地址,而想获取其对应的主机名
C.
知道本网段某台主机的主机名,而想获取其对应的IP地址
D.
知道本网段某台主机的MAC地址,而想获取其对应的IP地址 ‍
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A.
1,2,4
B.
1,2,3
C.
1,3,4
D.
1,2,3,4
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A.
I, III, IV D.I, II, III, IV
B.
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【单选题】【单选】在船舶中使用的电话通讯系统有1对讲电话系统2指挥电话系统3自动电话系统4直通电话系统
A.
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B.
①+②+③
C.
①+②+③+④
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