Exact2Pass
You are in a sharded cluster. What will you do prior to initiating backup in sharded cluster?
Which mongodb tools allow us to work with our data in a human readable format?
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.
Which of the following command is used to get all the indexes on a collection?
Which of the following is a valid insert statement in mongodb? Select all valid.
Which is the correct order (lowest to highest) in which MongoDB compares the BSON types?
Consider the following document from the products collection:
What does the following query using $elemMatch return? db.products.find( { product_code: "345678" }, { variations: { $elemMatch: { size: ^L^ } } } )
Which of the following needs to be performed prior to initiate backup on a sharded cluster?
Given a replica set with five data-bearing members, suppose the primary goes down with operations in its oplog that have been copied from the primary to only one secondary. Assuming no other problems occur, which of the following describes what is most likely to happen?
Which of the following command inside aggregate command is used in MongoDB aggregation to filter the documents to pass only the documents that match the specified condition(s) to the next pipeline stage.
The oplog (operations log) is a special capped collection that keeps a rolling record of all operations that modify the data stored in your databases. All the replica set members contain a copy of the oplog in the following collection:
Which option should be used to update all the documents with the specified condition in the MongoDB query?
In a collection that contains 100 post documents, what does the following command do? db. posts. find().skip(5).limit(5)