Q. For most aggregation operations, the ______ Pipeline provides better performance and more coherent interface.

View solution

Q. What would be the maximum document size for results of mapreduce operation?

View solution

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

View solution

Q. Point out the wrong statement.

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. Point out the correct statement.

View solution

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

View solution

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

View solution

Q. Point out the wrong statement.

View solution

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

View solution

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

View solution

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

View solution

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

View solution