C100DBA Exam Dumps - MongoDB Certified DBA Associate Exam (Based on MongoDB 4.4)

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Question # 4

Consider that our posts collection contains an array field called tags that contains tags that the user enters. {

Which of the following commands will find all the posts that have been tagged as tutorial.

db.posts.find( { tags : ["tutorial"] } );

db.posts.find( { $array : {tags: "tutorial") > );

db.posts.find( { tags : "tutorial" } );

db.posts.findInArray( { tags : "tutorial" > );

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Question # 5

Which option should be used to update all the documents with the specified condition in the MongoDB query?

specify {all: true} as the third parameter of update command

updateAII instead of update

specify {updateAII: true} as the third parameter of update command

specify {multi : true} as the third parameter of update command

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Question # 6

What read preference should your application use if you want to read from the primary under normal circumstances but allow reads from secondaries when a primary is unavailable?

secondaryPreferred

Secondary

nearest

primary

primaryPreferred

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Question # 7

In what format does mongodump creates backup files?

BSON

JSON

SOAP

XML