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MongoDB
Certified DBA Associate
C100DBA Free Questions
MongoDB C100DBA Quiz:2 Topic:1 Questions:6-10

Home
MongoDB
Certified DBA Associate
C100DBA Free Questions
MongoDB C100DBA Quiz:2 Topic:1 Questions:6-10

MongoDB C100DBA Quiz:2 Topic:1 Questions:6-10

Free Practice Mock Questions Set 6-10 (Quiz # 2) for MongoDB C100DBA Exam, according to official MongoDB Certified DBA Associate Exam syllabus topic # 1

Question: 1

If the value of totalKeysExamined is 30000 and the value of totalDocsExamined is 0, which of the following option is correct?

ANone of the above

BThe query used an index to fetch the results

CThe query returned 0 documents

DThe query returned 30000 documents after scanning the documents

Answer : B

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Question: 2

Which mongodb tool is used to report details on number of database operations in MongoDB?

Amongostat

Bmongotop

Cmongorestore

Dmongodump

Answer : A

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Question: 3

Which of the following command inside aggregate command is used in MongoDB aggregation to filter the documents to pass only the documents that match the specified condition(s) to the next pipeline stage.

A$aggregate

B$sum

C$match

D$group

Answer : C

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Question: 4

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

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

Answer : B

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Question: 5

Which of the following node is used during election in a replication cluster?

Aprimary

Barbiter

Chidden

Dsecondary

Answer : B

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