Windows中，在命令行输入（ ）命令可以得到如下的回显。?
Server: UnKnown??
Adress: 159.47.11.80??
xxx.edu.cn??
primary name server = nsl.xxx.edu.cn??
responsible mail addr = mailxxx.edu.cn??
serial = 2020061746??
refresh= 1200（20 mins）?
retry= 7200（2 hours）?
expire = 3600（1 hour）?
default TTL = 3600（1 hour）
- A.nslookup -type=A xxx.edu.cn
- B.nslookup -type=CNAME xxx.edu.cn
- C.nslookup -type=NS xxx.edu.cn
- D.nslookup-type=PTR xxx.edu.cn
正确答案及解析
正确答案
解析
本题考查的是NS lookup 命令。从命令的输出可以看到返回的信息主要是相关的NS服务器的信息，因此命令中的参数查找的数据类型是NS。
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