You have designed a web application with mongoDB. You have configured replication. The replica set is in place and function properly. What happens in case of failure?
Answer(s): B
You have a replicated cluster with 1 primary, 3 secondary, 1 arbiter. One of the secondary is hidden. What is the replication factor of this replicated cluster?
Answer(s): C
In a replica set, a_________number of members ensures that the replica set is always able to select a primary.
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?
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