Name: MongoDB Certified DBA Associate Exam
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SKU: C100DBA
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Free MongoDB C100DBA Exam Actual Questions

The questions for C100DBA were last updated On Apr 27, 2024

Question No. 1

What does the following aggregate query perform?

AFetches the posts with likes between 100 and 200 and sets their _id as null

BGroups the posts by number of likes (101, 102, 103.) by adding 1 every time

CCalculates the number of posts with likes between 100 and 200

DFetches the posts with likes between 100 and 200, sets the _id of the first document as null and then increments it 1 every time

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Correct Answer: C

Question No. 2

Which of the following commands finds all the documents in the posts collection with post timestamp field as null?

Adb.posts.find( { post_timestamp: { $fieldtype: null } } )

Bdb.posts.find( { post_timestamp: { $type: null } } )

Cdb.posts.find( { post_timestamp : { $type; 10 > > )

Ddb.posts.find( { post_timestamp: { $fieldtype: 10 } } )

Show Answer

Correct Answer: B

Question No. 3

What is the first task that a secondary would perform on being prompted by another secondary for an election?

AStart the election process for primary

BVote for the first secondary so that it would become the next primary

CVote for itself and then call for election

DConnect to primary to confirm its availability

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Correct Answer: D

Question No. 4

Aggregation Pipelines have a limit of:

ANo limit on document and 100 MB RAM

B2 MB document and no limit on RAM

C2 MB document and 100 MB RAM

D16 MB document and 100 MB RAM

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Correct Answer: D

Question No. 5

Which option should be used to update all the documents with the specified condition in the MongoDB query?

Aspecify {all: true} as the third parameter of update command

BupdateAII instead of update

Cspecify {updateAII: true} as the third parameter of update command

Dspecify {multi : true} as the third parameter of update command

Show Answer

Correct Answer: D