최신MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) - C100DBA무료샘플문제

A. Calculates the number of posts with likes between 100 and 200

B. Fetches the posts with likes between 100 and 200 and sets their _id as null

C. Fetches the posts with likes between 100 and 200, sets the _id of the first document as null and then increments it 1 every time

D. Groups the posts by number of likes (101, 102, 103.) by adding 1 every time

A. 2 MB document and no limit on RAM

B. No limit on document and 100 MB RAM

C. 16 MB document and 100 MB RAM

D. 2 MB document and 100 MB RAM

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

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

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

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

A. update users collection and restart mongodb with -auth option

B. All of the above

C. update users collection and restart mongodb

D. update users collection and run db.enableAuthenticationQ

A. 100 ms

B. 100 s

C. 1s

D. 60 s