166_______________________________________ Internet

Header  | OPCODE = SQUERY, RESPONSE, AA
Question   QNAME = ISI.EDU., QCLASS = IN, QTYPE = MX

Answer    ISI.EDU.                  MX 10 VENERA.ISI.EDU.
MX 20 VAXA. ISI.EDU

Authority        "
<empty>

Additional  VAXA.ISI.EDU.     172800   A   10.2.0.27

172800   A   128.9.0.33
VENERA.ISI.EDU.  172800      10.1.0.52
172800      128.9.0.32

. 3.28.  DNS-      MX   
 

 NSLOOKUP

 NSLOOKUP       
      TCP/IP.  -
       DNS,
      DNS, 
IP-     DNS  . ,
        
 .  NSLOOKUP    
       -
       .

    ( )   DNS 
NSLOOKUP   "  " DNS , -
     .

  NSLOOKUP     
.      DNS-, 
    .     -
   ( MX)   sun.corn.

:\>nslookup

Default Server: teaml.mcs.marinform.ru

Address: 195.5.151.50

> www.sun.corn

Server: teaml.mcs.marinform.ru

Address: 195.5.151.50