Which of the documents below will be retrieved by the following query? Assume the documents are stored in a collection called "sample". Check all that apply. db.sample.find( { "$or" : [ { "a" :...
What is the equivalent command in MongoDB for the following SQL query? SELECT * FROM posts WHERE author like "%john%"A . db.posts.find( { author: /John/ } )B . db.posts.find( { author: /AjohnA/ > )C...
Which operations add new documents to a collection?A . CreateB . updateC . insertD . deleteView AnswerAnswer: A,C
JSON stands forA . JavaScript Object NotationB . JavaScript Object NamingC . JavaScript Object NoticeD . None of the aboveView AnswerAnswer: A
If the value of totalKeysExamined is 30000 and the value of totalDocsExamined is 0, which of the following option is correct?A . None of the aboveB . The query used an index to fetch...
Which of the following is supported by MongoDB?A . Transaction ManagementB . ACID TransactionsC . JournalingD . Relationships between Collections (Primary Key Foreign Key)View AnswerAnswer: C
Which of the following is true of the mechanics of replication in MongoDB? Check all that apply.A . Members of a replica set may replicate data from any other data-bearing member of the set...
Which option should be used to update all the documents with the specified condition in the MongoDB query?A . specify {all: true} as the third parameter of update commandB . updateAII instead of updateC...
CORRECT TEXT What tool do you use if you want to extract a CSV from mongo?View AnswerAnswer: mongoexport
Which type of indexes does MongoDB support?A . All of the aboveB . Compound IndexesC . Multikey IndexesD . Geospatial IndexesView AnswerAnswer: A
