域名的概念与机制[12]

在我们的例子空间中，假设我们希望将根管理权分散到MIL，EDU，MIT.EDU和ISI.EDU区，我们可以按下图分配名字服务器：（认证权威将被加上括号）



                                  |(C.ISI.EDU,SRI-NIC.ARPA
                                  | A.ISI.EDU)
            +---------------------+------------------+
            |                     |                  
|           MIL                   EDU                ARPA
            |(SRI-NIC.ARPA,       |(SRI-NIC.ARPA,    
|            | A.ISI.EDU           | C.ISI.EDU)       
|      +-----+-----+               |     +------+-----+-----+
      |     |     |               |     |      |           
|     BRL  NOSC  DARPA             |  IN-ADDR  SRI-NIC     ACC
                                  
|      +--------+------------------+---------------+--------+
      |        |                  |               |        
|     UCI      MIT                 |              UDEL     YALE
               |(XX.LCS.MIT.EDU, ISI
               |ACHILLES.MIT.EDU) |(VAXA.ISI.EDU,VENERA.ISI.EDU,
           +---+---+              | A.ISI.EDU)
           |       |              
|          LCS   ACHILLES +--+-----+-----+--------+
           |             |  |     |     |        
|           XX            A  C   VAXA  VENERA Mockapetris