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XK0-005 · Question #777

An administrator found a suspicious public IP address in a log file. Which of the following commands can be used with the IP address to resolve back to a domain? (Choose two).

The correct answer is A. dig -x D. nslookup. The dig -x command performs a reverse DNS lookup, which takes an IP address and finds the associated domain name. The nslookup command can be used to perform a reverse DNS lookup as well. By providing the IP address to nslookup, it can return the corresponding domain name if a…

Troubleshooting

Question

An administrator found a suspicious public IP address in a log file. Which of the following commands can be used with the IP address to resolve back to a domain? (Choose two).

Options

  • Adig -x
  • Bdig
  • Cwhois
  • Dnslookup
  • Etraceroute -n
  • Fhostname

How the community answered

(52 responses)
  • A
    92% (48)
  • B
    4% (2)
  • C
    2% (1)
  • F
    2% (1)

Explanation

The dig -x command performs a reverse DNS lookup, which takes an IP address and finds the associated domain name. The nslookup command can be used to perform a reverse DNS lookup as well. By providing the IP address to nslookup, it can return the corresponding domain name if a reverse DNS entry

Topics

#DNS#Reverse DNS lookup#Networking commands#Linux utilities

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