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Which of the following functionality is used for aggregation framework?

Correct Answer : B

After starting the mongo shell, your session will use the ________ database by default

Correct Answer : C

Which of the following mode defaults to false?

Correct Answer : A

The mongo shell loads and parses the ___________ file on startup.

Correct Answer : C

MongoDB is a _________ database that provides high performance, high availability, and easy scalability

Correct Answer : C

In MongoDB _________ operations modify the data of a single collection

Correct Answer : A

As per the aggregation pipeline optimization concepts, if you have a $sort followed by a $match:

Correct Answer : A

A collection and a document in MongoDB is equivalent to which of the SQL concepts respectively?

Correct Answer : A

______ can be used to iterate the cursor of document results returned by db.collection.find()

Correct Answer : A

Point out the wrong statement

Correct Answer : C

The output of the reduce function may pass through a ______ function to further condense or process the results of the aggregation

Correct Answer : A

Which of the following flag can be set by mongo shell?

Correct Answer : B

Which index is used to index the content stored in arrays?

Correct Answer : A

_______ groups documents by some specified expression and outputs to the next stage a document for each distinct grouping

Correct Answer : B

_________ is used to view statistics about the query plan for a given query

Correct Answer : B

Point out the wrong statement

Correct Answer : A

Which of the following method is used to query documents in collections?

Correct Answer : A

Which of the following language is MongoDB written in?

Correct Answer : D

_id is a ________ bytes hexadecimal number which assures the uniqueness of every document

Correct Answer : C

_____________ is used to control mongod commits in the journal

Correct Answer : C

Point out the correct statement

Correct Answer : A

____________ works similar to HAVING clause in SQL

Correct Answer : C

Which of the following operation can be optionally used for map reduce?

Correct Answer : A

You can only use jsMode for result sets with fewer than 500,000 distinct key arguments to the mapper’s _______ function

Correct Answer : A

___________ is used to determine whether a query is a covered query

Correct Answer : B

Object_Id is similar to _________ key in Relational Databases

Correct Answer : A

A query _______ consists of a combination of query, sort, and projection specifications

Correct Answer : B

__________ returns the JavaScript representation in the form of a string literal

Correct Answer : B

Which of the following will implicitly create the collection testData?

Correct Answer : B

Which of the following method returns one document?

Correct Answer : A