Networking Fundamentals — Question 18

What type of DNS resource record maps an IP address to a fully qualified domain name (FQDN)?

Answer options

• A. CNAME
• B. PTR
• C. AAAA
• D. A

Correct answer: C

Explanation

The correct answer is C, as AAAA records specifically map IPv6 addresses to FQDNs. Option A, CNAME, is used for aliasing one domain name to another, while B, PTR, is for reverse lookups mapping FQDNs to IP addresses. Option D, A, is used for mapping IPv4 addresses to FQDNs.