Free C100DBA – MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4) Practice Test Question

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  { _id : 3, quote : "Nobody will ever catch me." }

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  { _id : 1, quote : "That's a fact, Jack." }

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  { _id : 2, quote : "Find out if that fact is correct." }
  
  
  

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  db.toys.find( { name : "Big Rig Truck", date : "2013-02-01", manufacturer : "Tanko"

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  db.toys.find( { manufacturer : "Matteo", name : "Barbara", date : "2014-07-02" } )

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  db.toys.find( { date : "2015-03-01", manufacturer : "Loggo", name : "Brick Set" } )
  
  
  

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  Perform queries against MongoDB collections

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  Perform administrative tasks

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  Use as a JavaScript framework for your production system
  
  
  

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  db.test.push({x:2,y:"apple"})

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  db.test.insert«"x":2, "y":"apple"})

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  db.test.insert({x:2,y:"apple"})

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  db.test.insert({x:2},{y:"apple"})
  
  
  

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  mongoexport B. mongostat

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  mongoimport

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  mongodump
  
  
  

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  $project

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  $aggregate

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  $match

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  $group
  
  
  

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  3

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  5

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  4

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  2

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  1
  
  
  

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  7

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  03

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  04

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  06
  
  
  

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  mapReduce

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  group

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  aggregate

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  All of the above
  
  
  

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  Returns 5 comments, beginning with the last 10 items

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  Returns 10 comments, beginning with the last

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  Returns 10 comments, beginning with the first

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  Returns 5 comments, beginning with the first 10 items