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Dawn is conducting the reconnaissance phase of a penetration test and would like to identify the registered owner of a domain name. Which one of the following tools would be most likely to provide her with this information?


A. Whois
B. Nslookup
C. Dig
D. Ping


Correct Answer: A.


Whois queries provide information about the registered owners of domain names and are a useful open source intelligence tool. The nslookup and dig commands perform standard DNS queries and can determine the IP addresses associated with domain names but do not normally reveal registration information. The ping command is used to test network connectivity.