In TCP/IP stack,RARP does which one of the following?A：Maps logical addresses to physical addresses using unicasts B：Maps physical addresses to logical addresses using broadcasts C：Maps ARP table entr
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B.RARP 反向地址转换协议就是将局域网中某个主机的物理地址转换为IP地址,比如局域网中有一台主机只知道物理地址而不知道IP地址,那么可以通过RARP协议发出征求自身IP地址的广播请求,然后由RARP服务器负责回答.RARP协议广泛用于获取无盘工作站的IP地址.