AZ-700 · Question #73
AZ-700 Question #73: Real Exam Question with Answer & Explanation
The correct answer is C: AA. Azure Private DNS supports the following record types: A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, and TXT. The record types 'AA' (two A's) and 'AAA' (three A's) do not exist in the DNS standard at all - they are fabricated/invalid record types. AAAA (four A's) is a valid record type
Question
The Domain Name System (DNS) resolves or translates a service name to an IP address. Which of the following records types can't be used by Azure Private DNS?
Options
- ACNAME
- BA
- CAA
- DAAA
- EAAAA
- FPTR
Explanation
Azure Private DNS supports the following record types: A, AAAA, CNAME, MX, NS, PTR, SOA, SRV, and TXT. The record types 'AA' (two A's) and 'AAA' (three A's) do not exist in the DNS standard at all - they are fabricated/invalid record types. AAAA (four A's) is a valid record type used for IPv6 addresses and IS supported by Azure Private DNS. The question tests whether candidates know that 'AA' and 'AAA' are not real DNS record types. Choices A (CNAME), B (A), E (AAAA), and F (PTR) are all valid DNS record types supported by Azure Private DNS.
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