Which of the following should a technician use in DNS to map a device to an IPv6 address?

The correct answer is C. AAAA. DNS uses different record types to map hostnames to IP addresses. An 'A' record maps a hostname to an IPv4 address (32-bit). An 'AAAA' (quad-A) record maps a hostname to an IPv6 address (128-bit) - four times the bits of IPv4, hence four A's. CNAME is an alias record pointing one

Networking

Question

Options

AA
BCNAME
CAAAA
DMX

How the community answered

(34 responses)

A
3% (1)
B
6% (2)
C
88% (30)
D
3% (1)

Explanation

DNS uses different record types to map hostnames to IP addresses. An 'A' record maps a hostname to an IPv4 address (32-bit). An 'AAAA' (quad-A) record maps a hostname to an IPv6 address (128-bit) - four times the bits of IPv4, hence four A's. CNAME is an alias record pointing one hostname to another, and MX records direct email to a mail server. For IPv6 forward DNS resolution, AAAA is always the correct record type.

Topics

#DNS#IPv6#DNS record types#Network configuration

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