Q. _______ filters the document stream to allow only matching documents to pass unmodified into the next pipeline stage.

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Q. Point out the wrong statement.

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Q. Which of the following can be used to implement field level redaction?

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Q. ________ passes the first n documents unmodified to the pipeline where n is the specified limit.

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Q. _______ reorders the document stream by a specified sort key.

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Q. Which of the following operator incorporates the functionality of $match, $sort, and $limit for geospatial data?

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Q. _____ Writes the resulting documents of the aggregation pipeline to a collection.

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Q. ________ deconstructs an array field from the input documents to output a document for each element.

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Q. Which of the following operator is related to geography of data?

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Q. Which of the following stages cannot appear multiple times in a pipeline?

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Q. Point out the correct statement.

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Q. Aggregation expressions use ______ path to access fields in the input documents.

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Q. Which of the following statement is equivalent to “$$CURRENT.<field>”?

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Q. Point out the wrong statement.

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Q. ______ binds variables for use in the specified expression.

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Q. ________ applies an expression to each item in an array and returns an array with the applied results.

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Q. In the vars assignment block, ________ refers to the value of an externally defined variable low.

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Q. To avoid treating numeric or boolean literals as projection flags, use the _______ expression to wrap the numeric or boolean literals.

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Q. MongoDB treats the literals as projection flags, valid only in the _______ stage.

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Q. ______ expressions ignores the duplicate entries in each input array and the order of the elements.

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