Printable PDFMongoDB C100DBA Exam Questions & Answers
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Vendor: MongoDB
Exam Code: C100DBA
Exam Name: MongoDB Certified DBA Associate (Based on MongoDB 4.4)
Certification Provider: MongoDB
Total Questions: 132 Q&A ( View Details)
Updated on: Jul 03, 2026
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Related Exams
- C100DBA MongoDB Certified DBA Associate (Based on MongoDB 4.4)
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C100DBA Online Practice Questions and Answers
Consider a collection posts which has fields: Jd, post_text, post_author, post_timestamp, post_tags etc. Which of the following query retrieves ONLY the key named post_text from the first document retrieved?
A. db.posts.finOne({},{_id:0, post_text:1})
B. db.posts.findOne({post_text: 1})
C. db.posts.find({},{_id:Of post_text:1})
D. db.posts.finOne珆,{post_text:l})
In a collection that contains 100 post documents, what does the following command do? db. posts. find ().skip(5).limit(5)
A. Skip and limit nullify each other. Hence returning the first five documents
B. Limits the first five documents and then return them in reverse order
C. Skips the first five documents and returns the sixth document five times
D. Skips the first five documents and returns the next five
What does the following aggregate query perform?
A. Fetches the posts with likes between 100 and 200 and sets their _id as null
B. Groups the posts by number of likes (101, 102, 103.) by adding 1 every time
C. Calculates the number of posts with likes between 100 and 200
D. Fetches 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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