100% Free C100DBA Practice Exam Questions and Answers

What is the purpose of elections in a replica set?

What are the audit log destinations? (Select three) 

Consider an inventory collection that contains these documents:{ " _id " : 1, " product " : " x-small box " , " colors " : [ " brown " , " black " , " white " ], " qty " : 50 }{ " _id " : 2, " product " : " small box " , " colors " : [ " brown " , " white " ], " qty " : 60 }{ " _id " : 3, " product " : " medium box " , " colors " : [ " black " , " grey " , " white " ], " qty " : 45 }{ " _id " : 4, " product " : " large box " , " colors " : [ " grey " ], " qty " : 50 }{ " _id " : 5, " product " : " x-large box " , " colors " : [ " grey " , " white " ], " qty " : 10 }What result set does the following query return?db.inventory.find({$or: [{ " product " : " x-small box " },{$and: [{ " qty " : { $ne: 50 } },{ " colors " : { $nin: [ " brown " ] } }]}]})

The Production MongoDB Cluster contains Personally Identifiable Information, such as Name,Demographics, Date of Birth, and Government Identification Number. Due to strict compliance requirements,a database administrator is tasked to ensure a client ' s side encryption.What feature should the administrator use to meet the requirement?

Which option can be used with update command so that a new document gets created if no matching document is found based on the query condition?