Certified Ethical Hacker (CEH v11) — Question 153

Which system consists of a publicly available set of databases that contain domain name registration contact information?

Answer options

• A. WHOIS
• B. CAPTCHA
• C. IANA
• D. IETF

Correct answer: A

Explanation

The correct answer is WHOIS, as it specifically refers to the system that allows users to query databases for domain registration information. CAPTCHA, IANA, and IETF serve different purposes and do not provide access to domain registration contact details.