16 bit
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... which is an encoded 16 bit value that specifies the type
of the resource in this resource record. Types refer to
...
... which is an encoded 16 bit value which identifies a
protocol family or instance of a protocol. ...
... The MX RRs have an RDATA section which consists of a 16 bit number
followed by a domain name. The address ...
... query" to mean standard query unless otherwise specified. The
QTYPE and QCLASS fields are each 16 bits long, and are a superset of
defined types and classes.
...