Q. ________ subtracts two dates to return the difference in milliseconds.

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Q. Which of the following returns a substring of a string?

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Q. Point out the correct statement.

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Q. Which of the following accepts a single argument expression?

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Q. Which of the following performs case-insensitive string comparison?

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Q. Point out the wrong statement.

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Q. _______ is used for access text search metadata.

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Q. Which of the following accepts named parameters?

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Q. _______ returns the number of elements in the array.

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Q. _________ returns a value without parsing.

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Q. db.collection.aggregate() returns a _______ and can return result sets of any size.

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Q. The _____ JavaScript engine allows multiple JavaScript operations to execute at the same time.

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Q. Point out the correct statement.

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Q. If the ______ field for mapReduce has the sharded value, MongoDB shards the output collection using the _id field as the shard key.

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Q. In MongoDB __________ mongos retrieves the results from each shard, performs a merge sort to order the results.

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Q. Point out the wrong statement.

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Q. Which of the following function follows the reduce method and modifies the output?

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Q. __________ specifies global variables that are accessible in the map.

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Q. MongoDB converts the JavaScript objects emitted by the map function to ________ objects.

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Q. You can only use jsMode for result sets with fewer than 500,000 distinct key arguments to the mapper’s _______ function.

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