Question 31 : In MongoDB ______ ,mongos retrieves the results from each shard, performs a merge sort to order the results
1. 3.0
2. 2.0
3. 1.0
4. None of the mentioned
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Question 32 : If the ______ field for mapReduce has the sharded value, MongoDB shards the output collection using the _id field as the shard key.
1. input
2. $in
3. $out
4. none of the mentioned
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Question 33 : The _____ JavaScript engine allows multiple JavaScript operations to execute at the same time.
1. V8
2. V12
3. V7
4. None of the mentioned
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Question 34 : db.collection.aggregate() returns a _______ and can return result sets of any size.
1. replica
2. cursor
3. document
4. $subtract
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Question 35 : _________ returns a value without parsing.
1. $string
2. $literal
3. $characters
4. None of the mentioned
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Question 36 : _______ returns the number of elements in the array.
1. $number
2. $size
3. $div
4. None of the mentioned
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Question 37 : Which of the following accepts named parameters ?
1. $reduce
2. $letnum
3. $let
4. None of the mentioned
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Question 38 : _______ is used for access text search metadata.
1. $text
2. $metades
3. $meta
4. All of the mentioned
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Question 39 : Which of the following performs case-insensitive string comparison ?
1. $strcasecmpequals
2. $strcasecmp
3. $strcmp
4. None of the mentioned
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Question 40 : Which of the following accepts a single argument expression ?
1. $toLow
2. $toUpper
3. $toEqual
4. None of the mentioned
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