MongoDB Mcq Question Set 11 | MongoDB | Learn & Give Online MCQS Test ,MCQs: multiple choice questions and answers,Mock Tests and Practice Papers

Question:

 $multiply __________ numbers to return the result.

1. multiplies

2.divides

3.comapres

4. All of the mentioned

Question:

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

1. â€œ$$lowâ€

2.â€œ$$lowinâ€

3.â€œ$$1â€

4.None of the mentioned

Question:

 MongoDB applies the _________ phase, which collects and condenses the aggregated data.

1. map

2.reduce

3.mapper

4.All of the Mentioned

Question:

 Point out the wrong statement.

1. Documents do not pass through the stages in sequence

2.Pipeline stages appear in an multi dimensional array

3.$project reshapes each document in the stream, such as by adding new fields or removing existing fields

4.All of the Mentioned

Question:

 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

Question:

 Which of the following accepts any number of argument expression?

1. $setIntersection

2.$setDifference

3.$setEquals

4.None of the mentioned

Question:

 Which of the following database command is used for mapreduce function?

1.mapReduce

2.mapperRed

3. redmap

4.None of the mentioned

Question:

 Which of the following performs a relative complement of the second set relative to the first?

1.$setIntersection

2. $setDifference

3.$setEquals

4. $setUnion

Question:

$allElementsTrue returns true if no element of a set evaluates to _______

1.false

2.true

3.0

4.1

Question:

$ne returns true if the values are not _______

1.equivalent

2.null

3.0

4.None of the mentioned

Question:

$setIsSubset returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set.

1.Null

2.True

3.False

4.None of the mentioned

Question:

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

1.mpath

2.dbpath

3.lpath

4.Field

Question:

Comparison expressions return a boolean except for ________ which returns a number.

1. $copy

2. $cmp

3.$num

4.None of the mentioned

Question:

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

1.Aggregate

2.Replication

3. Sharding

4.None of the mentioned

Question:

MongoDB applies the _____ phase to each input document in mapreduce.

1.map

2.reduce

3.mapper

4.All of the Mentioned

Question:

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

1.$project

2.$gmap

3.$match

4.None of the mentioned

Question:

Point out the correct statement.

1.To access variables in expressions, use a string that prefixes the variable name with $$$

2.Expressions can include field paths and system variables, literals, expression objects, and expression operators

3.To specify a field path, use a string that prefixes with a dollar sign % the field name or the dotted field name

4. All of the mentioned

Question:

Point out the correct statement.

1.rsing ambiguity if the argument is a literal array, you must wrap the literal array in a $lits expression or keep the outer array that designates the argument list

2.rsing ambiguity if the argument is a literal array, you must wrap the literal array in a $lits expression or keep the outer array that designates the argument list

3.Operator expressions are similar to functions that take arguments

4. All of the mentioned

Question:

Point out the correct statement.

1.The comparison expressions take two argument expressions and compare both value and type, using the specified Java comparison order for values of different types

2. $gte returns true if the first value is greater than the second

3. $gte returns true if the first value is greater than or equal to the second

4. $gte returns true if the first value is greater than or equal to the second

Question:

Point out the wrong statement.

1.Literals can be of any type

2.CURRENT cannot be rebound

3. MongoDB parses string literals that start with a dollar sign $

4.None of the mentioned

Question:

Point out the wrong statement.

1.Boolean expressions evaluate their argument expressions as booleans and return a boolean as the result

2.In addition to the false boolean value, Boolean expression evaluates as false the following: null, 0, and undefined values

3.Set expressions performs set operation on arrays, treating arrays as sets

4.None of the mentioned

Question:

Query shape consists of a combination of query, sort, and _________ specifications.

1.selection

2.projection

3.collection

4.None of the mentioned

Question:

Syntax for specifying an initial batch size for the cursor is ______

1. cursor: { batchSize: <string> }

2.cursor: { batchSize: <int> }

3.cur: { batchSize: <int> }

4.None of the mentioned

Question:

The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.

1. finalize

2.filter

3.procedure

4.None of the mentioned

Question:

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

1.$literal

2.$bool

3. $unwin

4.None of the mentioned

Question:

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

Question:

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

1.15 MB

2.16 MB

3.17 MB

4.All of the Mentioned

Question:

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

1.$skip

2.$limit

3. $match

4.$redact

Question:

Which of the following method is overrided by Index filters?

1. hint

2.plan

3.execute

4. All of the mentioned

Question:

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

1.$geoSpatial

2. $geoNear

3. $geoRear

4.None of the mentioned

Question:

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

1.$geoSpatial

2.$geoNear

3. $geoRear

4. none of the mentioned

Question:

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

1.$regex

2.$reg

3. $match

4.$out

Question:

Which of the following statement is equivalent to â€œ$$CURRENT.<field>â€?

1. â€œ$%<field>â€

2. â€œ%<field>â€

3.â€œ$$<field>â€

4. â€œ$<field>â€

Question:

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

1.$regex

2. $reg

3.$match

4.None of the mentioned

Question:

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

1.$skip

2. $limit

3.$match

4. $redact

Question:

____ binds variables for use in the specified expression.

1.$skip

2.$let

3.$bind

4.None of the mentioned

Question:

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

1.set

2. boolean

3.aggregate

4.none of the mentioned

Question:

____ reorders the document stream by a specified sort key.

1.$skip

2. $limit

3. $sort

4. none of the mentioned

Question:

____ returns true if the first value is less than the second.

1.$lte

2.$lt

3.$setEquals

4.None of the mentioned

Question:

____ Writes the resulting documents of the aggregation pipeline to a collection.

1.$out

2. $in

3.$output

4.None of the mentioned

Question:

_____ accepts only single argument expression.

1.$setIsSubset

2.$bool

3.$anyElementTrue

4.None of the mentioned

Question:

_____ adds numbers to return the sum, or adds numbers and a date to return a new date.

1. $addnum

2.$setadd

3. $adds

4. $add

Question:

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

1.$map

2.$geo

3. $geoRear

4.None of the mentioned

Question:

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

1. $unwindelem

2. $unwind

3.$unwin

4.None of the mentioned

Question:

_____ returns a set with elements that appear in any of the input sets.

1.$setIntersection

2.$setDifference

3. $setEquals

4.$setUnion

Question:

_____ returns the remainder of the first number divided by the second.

1.$rem

2.$mod

3. $div

4.None of the mentioned

Question:

_____ subtracts two dates to return the difference in milliseconds.

1.$rem

2.$mod

3.$div

4.$subtract

Question:

______ can be used to iterate the cursor of document results returned by db.collection.find().

1. it

2.next

3.cur

4.None of the mentioned

Question:

______ can return the results of a map-reduce operation as a document, or may write the results to collections.

1.mapReduce

2. mapperRed

3.RedMap

4.None of the mentioned

Question:

_______ returns true if the input sets have the same distinct elements.

1. $setUnion

2.$setDifference

3. $setEquals

4.None of the mentioned

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MongoDB/MongoDB Mcq Question Set 11 Sample Test,Sample questions

Question: $multiply __________ numbers to return the result.

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

Question: MongoDB applies the _________ phase, which collects and condenses the aggregated data.

Question: Point out the wrong statement.

Question: String expressions, with the exception of ________ only have a well-defined behavior for strings of ASCII characters.

Question: Which of the following accepts any number of argument expression?

Question: Which of the following database command is used for mapreduce function?

Question: Which of the following performs a relative complement of the second set relative to the first?

Question: $allElementsTrue returns true if no element of a set evaluates to _______

Question: $ne returns true if the values are not _______

Question: $setIsSubset returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set.

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

Question: Comparison expressions return a boolean except for ________ which returns a number.

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

Question: MongoDB applies the _____ phase to each input document in mapreduce.

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

Question: Point out the correct statement.

Question: Point out the correct statement.

Question: Point out the correct statement.

Question: Point out the wrong statement.

Question: Point out the wrong statement.

Question: Query shape consists of a combination of query, sort, and _________ specifications.

Question: Syntax for specifying an initial batch size for the cursor is ______

Question: The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.

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

Question: To handle large datasets, set _________ option to true to enable writing data to temporary files.

Question: What would be the maximum document size for results of mapreduce operation?

Question: Which of the following can be used to implement field level redaction?

Question: Which of the following method is overrided by Index filters?

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

Question: Which of the following operator is related to geography of data?

Question: Which of the following stages cannot appear multiple times in a pipeline?

Question: Which of the following statement is equivalent to â€œ$$CURRENT.<field>â€?

Question: ___ filters the document stream to allow only matching documents to pass unmodified into the next pipeline stage.

Question: ___ passes the first n documents unmodified to the pipeline where n is the specified limit.

Question: ____ binds variables for use in the specified expression.

Question: ____ expressions ignores the duplicate entries in each input array and the order of the elements.

Question: ____ reorders the document stream by a specified sort key.

Question: ____ returns true if the first value is less than the second.

Question: ____ Writes the resulting documents of the aggregation pipeline to a collection.

Question: _____ accepts only single argument expression.

Question: _____ adds numbers to return the sum, or adds numbers and a date to return a new date.

Question: _____ applies an expression to each item in an array and returns an array with the applied results.

Question: _____ deconstructs an array field from the input documents to output a document for each element.

Question: _____ returns a set with elements that appear in any of the input sets.

Question: _____ returns the remainder of the first number divided by the second.

Question: _____ subtracts two dates to return the difference in milliseconds.

Question: ______ can be used to iterate the cursor of document results returned by db.collection.find().

Question: ______ can return the results of a map-reduce operation as a document, or may write the results to collections.

Question: _______ returns true if the input sets have the same distinct elements.

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Question:
$multiply __________ numbers to return the result.

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

Question:
MongoDB applies the _________ phase, which collects and condenses the aggregated data.

Question:
Point out the wrong statement.

Question:
String expressions, with the exception of ________ only have a well-defined behavior for strings of ASCII characters.

Question:
Which of the following accepts any number of argument expression?

Question:
Which of the following database command is used for mapreduce function?

Question:
Which of the following performs a relative complement of the second set relative to the first?

Question:
$allElementsTrue returns true if no element of a set evaluates to _______

Question:
$ne returns true if the values are not _______

Question:
$setIsSubset returns _______ if all elements of the first set appear in the second set, including when the first set equals the second set.

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

Question:
Comparison expressions return a boolean except for ________ which returns a number.

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

Question:
MongoDB applies the _____ phase to each input document in mapreduce.

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

Question:
Point out the correct statement.

Question:
Point out the correct statement.

Question:
Point out the correct statement.

Question:
Point out the wrong statement.

Question:
Point out the wrong statement.

Question:
Query shape consists of a combination of query, sort, and _________ specifications.

Question:
Syntax for specifying an initial batch size for the cursor is ______

Question:
The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation.

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

Question:
To handle large datasets, set _________ option to true to enable writing data to temporary files.

Question:
What would be the maximum document size for results of mapreduce operation?

Question:
Which of the following can be used to implement field level redaction?

Question:
Which of the following method is overrided by Index filters?

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

Question:
Which of the following operator is related to geography of data?

Question:
Which of the following stages cannot appear multiple times in a pipeline?

Question:
Which of the following statement is equivalent to â€œ$$CURRENT.<field>â€?

Question:
___ filters the document stream to allow only matching documents to pass unmodified into the next pipeline stage.

Question:
___ passes the first n documents unmodified to the pipeline where n is the specified limit.

Question:
____ binds variables for use in the specified expression.

Question:
____ expressions ignores the duplicate entries in each input array and the order of the elements.

Question:
____ reorders the document stream by a specified sort key.

Question:
____ returns true if the first value is less than the second.

Question:
____ Writes the resulting documents of the aggregation pipeline to a collection.

Question:
_____ accepts only single argument expression.

Question:
_____ adds numbers to return the sum, or adds numbers and a date to return a new date.

Question:
_____ applies an expression to each item in an array and returns an array with the applied results.

Question:
_____ deconstructs an array field from the input documents to output a document for each element.

Question:
_____ returns a set with elements that appear in any of the input sets.

Question:
_____ returns the remainder of the first number divided by the second.

Question:
_____ subtracts two dates to return the difference in milliseconds.

Question:
______ can be used to iterate the cursor of document results returned by db.collection.find().

Question:
______ can return the results of a map-reduce operation as a document, or may write the results to collections.

Question:
_______ returns true if the input sets have the same distinct elements.