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If the query planner selects a collection scan, the explain result includes a _________ stage.

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If the query planner selects a collection scan, the explain result includes a _________ stage.

(a) COLLSCAN

(b) TABLESCAN

(c) ROWSCAN

(d) All of the mentioned

The question was asked during an online interview.

Query is from Optimization Strategies topic in section Monitoring MongoDB and Optimization Strategies for MongoDB of MongoDB

1 Answer

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Best answer
The correct answer is (a) COLLSCAN

Explanation: The format and fields of the explain results have changed from previous versions.

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