Discussion
Replication may use either synchronous or asynchronous distributed database technologies, although asynchronous technologies are more typical in a replicated environment.
Answer: A
Correct answer: True
Synchronous replication updates every copy within the same transaction, which guarantees consistency but makes the transaction depend on every site being available. Asynchronous replication propagates changes afterwards, accepting a period of inconsistency in exchange for availability and speed, and that trade is the one usually taken.
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