Discussion
Replication should be used when which of the following exist?
Answer: C
Correct answer: The application's data can be somewhat out-of-date.
Replication is asynchronous in practice, so copies lag behind one another between refreshes. That is acceptable only where the application can work with data a little out of date - a catalogue or a reference table rather than a live account balance. The other two options describe conditions in which replication should be avoided.
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