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MongoDB Associate Database Administrator(Based on MongoDB 6.0 and 7.0+) C100DBA Question # 20 Topic 3 Discussion

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MongoDB Associate Database Administrator(Based on MongoDB 6.0 and 7.0+) C100DBA Question # 20 Topic 3 Discussion

C100DBA Exam Topic 3 Question 20 Discussion:
Question #: 20
Topic #: 3

Consider that you have a collection called population which has fields state and city. Which of the following query will calculate the population grouped by state and city?
A.

db.population.aggregate( [{ $group: { _id: { state: " $state " , city; " $city " },pop: { $sum: 1 > > > ] )

B.

db.population.aggregate( [{ $group: { _id: { state: Estate " , city: " $city " },pop: { $pop: 1 } } }] )

C.

db.population.aggregate( [{ $group: { _id: { state: Estate " , city: n$city " },pop: { $sum: " $pop " } } }] )

D.

db.population.aggregate( [{ $group: { _id: { city: " $city " },pop: { $sum: " $pop " } } }] )Multi Document Transaction is not supported by MongoDB

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Actual exam question for MongoDB C100DBA exam by Juno1276 at Sep 29, 2026, 6:23:58 AM

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