Figure 9.17 shows the hierarchy of name servers. How would you represent this hierarchy if one name server served multiple zones? In that setting, how does the name server hierarchy relate to the zone hierarchy? How do you deal with the fact that each zone may have multiple name servers?

Figure 9.17

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Client 1: penguins.cs.princeton.edu 10: 128.112.155.166 Local name. server 2: penguins.cs princeton.edu 3:a3nstid.com, 192.5.6.32 4: penguins.cs.princeton.edu 5: princeton.edu, 128.112.129.15 6: penguins.cs princeton.edu 7: dns1.cs.princeton.edu 128.112.136.10 8: penguins.cs.princeton.edu 9: 128.112.155.166 III) Root name server .edu name server Princeton name server CS name server