

MCQOPTIONS
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1. |
Which of the following query selects documents in the records collection that match the condition { “user_id”: { $lt: 42 } }? |
A. | db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 0 } ) |
B. | db.records.find( { “user_id”: { $lt: 42 } }, { “history”: 0 } ) |
C. | db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 1 } ) |
D. | db.records.select( { “user_id”: { $lt: 42 } }, { “history”: 0 } ) |
Answer» C. db.records.findOne( { “user_id”: { $lt: 42 } }, { “history”: 1 } ) | |