2.10. Answers to Review Questions

  1. B. A DNS server installed at each regional location will provide name and service resolution even if the WAN links go down. The local location will also have better performance because the requests will not have to travel through the WAN links. A single domain name for all the locations is needed because your requirement is to have one Active Directory tree with a contiguous name space.

  2. The client machine places its request with its preferred DNS server. If the DNS server doesn't have an entry in its DNS database, it forwards the request to a root-level server. The root-level server resolves the name and sends it back to the preferred DNS server. The DNS server caches the name so that any future requests don't ...

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