DNS正向搜索区的功能是将域名解析为IP地址，Windows XP系统中用于测试该功能的命令是（ ）。
- A.nslookup
- B.arp
- C.netstat
- D.query
正确答案及解析
正确答案
解析
nslookup是查询域名信息的一个非常有用的命令，可以指定查询的类型，可以查到DNS记录的生存时间还可以指定使用那个DNS服务器进行解释，在已安装TCP/IP协议的电脑上面均可以使用这个命令，主要用来诊断域名系统 （DNS） 基础结构的信息。arp命令是查询、删除、添加arp记录的命令。netstat用以查看本地连接状态信息。query是SQL查询语句，不是Windows XP下的DOS命令。
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