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Config servers, host the _______ database that stores metadata for sharded clusters.

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Config servers, host the _______ database that stores metadata for sharded clusters.

(a) head

(b) master

(c) config

(d) none of the mentioned

I have been asked this question in final exam.

This question is from Security and MongoDB API Interfaces in division Production Checklist, Security Concepts and Network Security of MongoDB

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The correct option is (c) config

Easiest explanation: Each production cluster has three config servers, initiated using the mongod –configsvr option.

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