Discussion
In the principal DNS resource record type, Type "A' represents ............. .
Answer: D
An A record gives the IP address of a host.
The A (address) resource record maps a host name to its 32-bit IPv4 address, which is the most common DNS lookup. AAAA records do the same for IPv6.
An NS record names an authoritative name server for a domain. A PTR (pointer) record maps an address back to a name, for reverse lookups. HINFO describes the host's CPU and operating system.
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