MongoDB
C100DBA · Question #39
C100DBA Question #39: Real Exam Question with Answer & Explanation
The correct answer is B. Number of index entries scanned. See the full explanation below for the reasoning.
Question
What does the totalKeysExamined field returned by the explain method indicate?
Options
- ANumber of documents that match the query condition
- BNumber of index entries scanned
- CDetails the completed execution of the winning plan as a tree of stages
- DNumber of documents scanned
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