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The _________ collection stores a document for each sharded collection in the cluster.

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The _________ collection stores a document for each sharded collection in the cluster.

(a) help

(b) shards

(c) collections

(d) all of the mentioned

This question was posed to me during an interview.

The above asked question is from Cluster Deployment in chapter Sharding Concepts, Mechanics and Sharded Cluster of MongoDB

1 Answer

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Best answer
The correct answer is (c) collections

Easy explanation: Shard keys are immutable and cannot be changed after insertion.

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