 3.       DNS 161

 (header)     ,    -
,   ,    RESPONSE ()  
 (    ).  Question 
   ,    Question .   -
    .

         ,   -
    SRI-NIC.ARPA,   
,    . 3.19.

Header Question AnswerAuthority Additional	OPCODE = SQUERY, RESPONSE
	QNAME = SRI-NIC.ARPA., QCLASS = IN, QTYPE = A
	SRI-NIC.ARPA. 1777 IN A 10.0.0.51 1777 IN A 26.0.0.73
	<empty>
	<empty>

Header	OPCODE = SQUERY, RESPONSE,	AA
Question	QNAME = SRI-NIC.ARPA., QCLASS	= IN, QTYPE = 
Answer	SRI-NIC.ARPA. 86400 IN A	26.0.0.73
	A	10.0.0.51
	MX	0 SRI-NIC.ARPA.
	HINFO	DEC2060 TOPS20
Authority	<empty>
Additional	<empty>

. 3.20.  DNS-     , 
       