单选题/etc/hosts这个档案的用途？（）A设定主机名称及IPB设定DNSC设定主机邮件D设定FTP
单选题
/etc/hosts这个档案的用途？（）
A
设定主机名称及IP
B
设定DNS
C
设定主机邮件
D
设定FTP
参考解析
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