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Welcome to the Aggregation Concepts and Aggregation Mechanics MCQs Page

Dive deep into the fascinating world of Aggregation Concepts and Aggregation Mechanics with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Aggregation Concepts and Aggregation Mechanics, a crucial aspect of MongoDB. In this section, you will encounter a diverse range of MCQs that cover various aspects of Aggregation Concepts and Aggregation Mechanics, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within MongoDB.

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Check out the MCQs below to embark on an enriching journey through Aggregation Concepts and Aggregation Mechanics. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MongoDB.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Aggregation Concepts and Aggregation Mechanics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Aggregation Concepts and Aggregation Mechanics MCQs | Page 7 of 12

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Q61.
$multiply __________ numbers to return the result.

a.

multiplies

b.

divides

c.

comapres

d.

all of the mentioned

Discuss
Answer: (a).multiplies
Q62.
_______ adds numbers to return the sum, or adds numbers and a date to return a new date.

a.

$addnum

b.

$setadd

c.

$adds

d.

$add

Discuss
Answer: (d).$add
Q63.
_______ returns the remainder of the first number divided by the second.

a.

$rem

b.

$mod

c.

$div

d.

None of the mentioned

Discuss
Answer: (b).$mod
Q64.
String expressions, with the exception of ________ only have a well-defined behavior for strings of ASCII characters.

a.

$setcon

b.

$concatenation

c.

$concat

d.

None of the mentioned

Discuss
Answer: (c).$concat
Q65.
________ subtracts two dates to return the difference in milliseconds.

a.

$rem

b.

$mod

c.

$div

d.

$subtract

Discuss
Answer: (a).$rem
Q66.
Which of the following returns a substring of a string?

a.

$subs

b.

$substring

c.

$substr

d.

None of the mentioned

Discuss
Answer: (c).$substr
Q67.
Point out the correct statement.

a.

$substr ends at a specified index position up to a specified length

b.

$toLower converts a string to lowercase

c.

$gtle returns true if the first value is greater than or equal to the second

d.

All of the mentioned

Discuss
Answer: (b).$toLower converts a string to lowercase
Q68.
Which of the following accepts a single argument expression?

a.

$toLow

b.

$toUpper

c.

$toEqual

d.

None of the mentioned

Discuss
Answer: (b).$toUpper
Q69.
Which of the following performs case-insensitive string comparison?

a.

$strcasecmpequals

b.

$strcasecmp

c.

$strcmp

d.

None of the mentioned

Discuss
Answer: (a).$strcasecmpequals
Q70.
Point out the wrong statement.

a.

{ $meta: “textScore” } expression is only meaningful in a pipeline that includes a $match stage with a $text query

b.

The { $meta: “textScore” } expression is the only expression that the $sort stage accepts

c.

$toLower only has a well-defined behavior for strings of ASCII characters

d.

None of the mentioned

Discuss
Answer: (d).None of the mentioned
Page 7 of 12

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