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You can set the _________ option on the balancer configuration to set different write concern semantics.

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You can set the _________ option on the balancer configuration to set different write concern semantics.

(a) writeConcern

(b) updateConcern

(c) readConcern

(d) all of the mentioned

This question was addressed to me by my college director while I was bunking the class.

This interesting question is from Sharding Mechanics topic in portion Sharding Concepts, Mechanics and Sharded Cluster of MongoDB

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The correct choice is (a) writeConcern

The best explanation: By default, each document operation during chunk migration propagates to at least one secondary before the balancer proceeds with the next docume

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