MongoDB DBA Quiz Questions and Answers

Answer :
  • Multi-statement transactions
  • Joins
Answer :
  • $project
Answer :
  • Skips the first five documents and returns the next five
Answer :
  • db.posts.finOne({},{_id:0, post_text:1})
Answer :
  • 16 MB document and 100 MB RAM
Answer :
  • The query used an index to fetch the results
Answer :
  • specify {multi: true} as the third parameter of update command
Answer :
  • mongostat
Answer :
  • 1
Answer :
  • primaryPreferred