What is the replication factor for a replicated cluster with 1 primary, 3 secondaries with one of them hidden. The set also has an arbiter?
Answer(s): D
Which operations add new documents to a collection?
Answer(s): A,C
Consider that you have a collection called population which has fields state and city. Which of the following query will calculate the population grouped by state and city?
Answer(s): C
Which of the following is true about sharding?
Answer(s): B
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