MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)
Last Update 5 days ago
Total Questions : 132
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Which features of relational database management systems were deliberately omitted in MongoDB and help us to obtain horizontal scalability? Check all that apply.
In a sharded replicas set environment with multiple mongos servers, which of the following would decide the mongos failover?
What does the totalKeysExamined field returned by the explain method indicate?
Which mongodb tools allow us to work with our data in a human readable format?
Which of the following statements are true about the $match pipeline operator? Check all that apply.
Using an arbiter allows one to easily ensure an odd number of voters in replica sets. Why is this important?
What does the following $slice query return using the following command? db.posts.find( {}, { comments: { $slice: [ -10, 5 ] } } )
In a collection that contains 100 post documents, what does the following command do? db. posts. find().skip(5).limit(5)
In a sharded replica set environment, the w Option provides ability for write concern and j Option provides ability for the data to be written on disk journal. Consider that we have a seven member replica set and we want to assure that the writes are committed to journal. What should be the value of j?
Consider the following example document from the sample collection. All documents in this collection have the same schema.
Which of the following queries will replace this with the document.
By default, the MongoDB cursor in mongo shell is configured to return how many documents? To get the next set of documents, which command is used?
Consider the following posts document:
Which of the following queries will return the documents but with only the first two tags in the tags array?
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?
In a replica set, a_________number of members ensures that the replica set is always able to select a primary.
TESTED 29 Apr 2024
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