Q. Which of the following key is used to denote uniqueness in the collection?

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Q. A query may include a ___________ that specifies the fields from the matching documents to return.

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Q. Point out the correct statement.

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Q. MongoDB stores all documents in _____________

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Q. In MongoDB _________ operations modify the data of a single collection.

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Q. Point out the wrong statement.

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Q. Which of the following operation adds a new document to the users collection?

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Q. Which of the following preference determines how the client direct read operations to the set?

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Q. Applications can also control the behavior of write operations using _______ concern.

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Q. MongoDB process collection of documents using _________ operations.

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Q. Which of the following pipeline is used for aggregation in MongoDB?

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Q. The order of documents returned by a query is not defined unless you specify a ______

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Q. Point out the correct statement.

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Q. In aggregation pipeline, the _______ pipeline stage provides access to MongoDB queries.

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Q. Which of the following method returns one document?

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Q. Point out the wrong statement.

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Q. Which of the following is the second argument to projection?

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Q. Which of the following query selects documents in the records collection that match the condition { “user_id”: { $lt: 42 } }?

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Q. Which of the following functionality is used for aggregation framework?

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Q. To suppress the _id field from the result set, specify _________ in the projection document.

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