GSLC Question #319: Real Exam Question with Answer & Explanation

The correct answer is A. AAAA. The AAAA (quad-A) DNS resource record maps a hostname to a 128-bit IPv6 address, serving the same purpose for IPv6 that the A record serves for IPv4.

Question

Which of the following is a DNS database resource record containing the host DNS name and the IPv6 address?

Options

AAAAA
BIPv6
CBzip2
DHOST

Explanation

The AAAA (quad-A) DNS resource record maps a hostname to a 128-bit IPv6 address, serving the same purpose for IPv6 that the A record serves for IPv4.

Common mistakes.

B. IPv6 is the network protocol version, not a DNS resource record type.
C. Bzip2 is a data compression algorithm and has no relation to DNS record types.
D. HOST is not a standard DNS resource record type - the correct record types are A, AAAA, CNAME, MX, etc.

Concept tested. DNS AAAA resource record for IPv6

Reference. https://datatracker.ietf.org/doc/html/rfc3596

Community Discussion

No community discussion yet for this question.

Full GSLC Practice