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If the query planner selects a _________ the explain result includes an IXSCAN stage.

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If the query planner selects a _________ the explain result includes an IXSCAN stage.

(a) Index

(b) Replica Set

(c) Document

(d) None of the mentioned

This question was addressed to me during an internship interview.

Asked question is from Optimization Strategies in portion Monitoring MongoDB and Optimization Strategies for MongoDB of MongoDB

1 Answer

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Best answer
The correct option is (a) Index

For explanation I would say: MongoDB runs the query optimizer to choose the winning plan for the operation under evaluation.

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