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Point out the correct statement.

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Point out the correct statement.

(a) MongoDB uses a locking system to ensure data set consistency

(b) If certain operations are long-running or a queue forms, performance will degrade as requests and operations wait for the lock

(c) Long queries can result from ineffective use of indexes

(d) All of the mentioned

The question was asked in an interview for job.

The origin of the question is Optimization Strategies in division Monitoring MongoDB and Optimization Strategies for MongoDB of MongoDB

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The correct choice is (d) All of the mentioned

Easiest explanation: Lock-related slowdowns can be intermittent.

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