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________ servers store the cluster’s metadata.

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________ servers store the cluster’s metadata.

(a) Local

(b) Config

(c) Master

(d) All of the mentioned

This question was addressed to me during a job interview.

I'd like to ask this question from Sharding Concepts in portion Sharding Concepts, Mechanics and Sharded Cluster of MongoDB

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Best answer
Right answer is (a) Local

For explanation I would say: This data contains a mapping of the cluster’s data set to the shards.

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