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A replica set can have only ________ primary.

(a) One

(b) Two

(c) Three

(d) All of the mentioned

The question was asked in examination.

My doubt is from Replication in MongoDB topic in division Replication Concepts, Processes and Replication Set of MongoDB

1 Answer

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Best answer
Right choice is (a) One

Easiest explanation: The secondaries replicate the primary’s oplog and apply the operations to their data sets such that the secondaries’ data sets reflect the primary’s data set.

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