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MongoDB Exam C100DBA Topic 6 Question 96 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 96
Topic #: 6
[All C100DBA Questions]

What does the totalKeysExamined field returned by the explain method indicate?

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Suggested Answer: B

by Salena at Sep 11, 2024, 04:49 AM

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Caitlin
2 days ago
Hmm, I was leaning towards A) until I read these other responses. Now I'm convinced B) is the correct answer. The other options just seem way off the mark.
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Charlene
5 days ago
C) Details the completed execution of the winning plan as a tree of stages? That's way too complex for a simple totalKeysExamined field. I'm sticking with B) - it just makes the most sense.
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Desiree
14 days ago
D) Number of documents scanned? Seriously? That's way too obvious. I'm going with B) - the number of index entries scanned sounds like the most relevant information provided by the totalKeysExamined field.
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Belen
19 days ago
A) seems logical, but I think B) is the correct answer. The totalKeysExamined field should indicate the number of index entries scanned, which is more relevant for understanding the query performance.
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Gilma
20 hours ago
A) seems logical, but I think B) is the correct answer.
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Rashad
1 months ago
I agree with Barbra, it makes sense that it would be the number of index entries scanned.
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Chandra
1 months ago
I believe it actually represents the number of documents scanned.
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Barbra
1 months ago
I think the totalKeysExamined field indicates the number of index entries scanned.
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