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?
In a sharded replicas set environment with multiple mongos servers, which of the following would decide the mongos failover?
If you have created a compound index on (A,B, C) which of the following access pattern will not be able to utilize the index?
What does the following aggregate query perform?
The following aggregation option is used to specify the specific fields that needs to be passed to the next stage of the aggregation pipeline: