MongoDB Questions and Answers – Pipeline Limits

This set of MongoDB Multiple Choice Questions & Answers (MCQs) focuses on “Pipeline Limits”.

1. Comparison expressions return a boolean except for ________ which returns a number.
a) $copy
b) $cmp
c) $num
d) None of the mentioned
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2. Point out the correct statement.
a) The comparison expressions take two argument expressions and compare both value and type, using the specified Java comparison order for values of different types
b) $gte returns true if the first value is greater than the second
c) $gte returns true if the first value is greater than or equal to the second
d) All of the mentioned
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3. ______ returns true if the first value is less than the second.
a) $lte
b) $lt
c) $setEquals
d) None of the mentioned
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4. $ne returns true if the values are not _______
a) equivalent
b) null
c) 0
d) none of the mentioned
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5. $multiply __________ numbers to return the result.
a) multiplies
b) divides
c) comapres
d) all of the mentioned
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6. _______ 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
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7. _______ returns the remainder of the first number divided by the second.
a) $rem
b) $mod
c) $div
d) None of the mentioned
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8. 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
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9. ________ subtracts two dates to return the difference in milliseconds.
a) $rem
b) $mod
c) $div
d) $subtract
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