Question 1 : String expressions, with the exception of ________ only have a well-defined behavior for strings of ASCII characters.
1. $setcon
2. $concatenation
3. $concat
4. None of the mentioned
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Question 2 : To handle large datasets, set _________ option to true to enable writing data to temporary files.
1. enableDiskUse
2. allowDiskUse
3. validateDiksUse
4. none of the mentioned
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Question 3 : COUNT function is provided by _________ in MongoDB.
1. $end
2. $sum
3. $max
4. All of the mentioned
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Question 4 : ____________ works similar to HAVING clause in SQL
1. $setcon
2. $group
3. $match
4. None of the mentioned
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Question 5 : _______ groups documents by some specified expression and outputs to the next stage a document for each distinct grouping.
1. $setcon
2. $group
3. $match
4. None of the mentioned
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Question 6 : Which of the following is used to retrieve like SELECT clause in SQL?
1. $reduce
2. $select
3. $project
4. None of the mentioned
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Question 7 : ________ limits the number of documents in result set
1. $project
2. $geo
3. $limit
4. None of the mentioned
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Question 8 : Which of the following provides similar functionality to join ?
1. $unwindelem
2. $unwind
3. $unwin
4. None of the mentioned
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Question 9 : Which of the operator is similar to order by clause in RDBMS ?
1. $sort
2. $match
3. $sortby
4. None of the mentioned
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Question 10 : __________ references the root document, i.e. the top-level document, currently being processed in the aggregation pipeline stage.
1. CURRENT
2. ROOT
3. PRUNE
4. All of the mentioned
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