CompTIA
N10-005 · Question #343
N10-005 Question #343: Real Exam Question with Answer & Explanation
The correct answer is C: AAAA. The AAAA DNS record type maps a hostname to its 128-bit IPv6 address, which must be queried to resolve IPv6 connectivity for a website.
Question
Which of the following DNS records must be queried to resolve the IPv6 address of a website?
Options
- ACNAME
- BPTR
- CAAAA
- DA
Explanation
The AAAA DNS record type maps a hostname to its 128-bit IPv6 address, which must be queried to resolve IPv6 connectivity for a website.
Common mistakes.
- A. CNAME records create an alias from one domain name to another canonical domain name and do not store IP addresses of any version.
- B. PTR records are used for reverse DNS lookups, mapping an IP address back to a hostname, not for forward resolution of IPv6 addresses.
- D. A records store 32-bit IPv4 addresses, not IPv6 addresses.
Concept tested. DNS AAAA record for IPv6 address resolution
Reference. https://learn.microsoft.com/en-us/azure/dns/dns-overview
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