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Chaper 9 DNS2, DNS Issues Its design makes changes to the structure of the name space difficult -Merging previously separate domain trees under a new root -Moving subtrees to a different part of the structure, Directory and Discovery services Directory service: -Retrieves the set of names that satisfy a given description Ex. X. 500, MS Active Directory Services, DNS Issues Names tables change infrequently, but when they do, caching can result in the delivery of stale data. -Clients are responsible for detecting this and recovering