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Point out the correct statement

Correct Answer : A

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

Correct Answer : B

Which of the following language is MongoDB written in?

Correct Answer : D

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

Correct Answer : C

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

Correct Answer : B

Command to check existence of collection is _____________

Correct Answer : B

In MongoDB _________ operations modify the data of a single collection

Correct Answer : A

Object_Id is similar to _________ key in Relational Databases

Correct Answer : A

_____________ is used to control mongod commits in the journal

Correct Answer : C

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

Correct Answer : A

What is the minimum sensible number of voting nodes to a replica set?

Correct Answer : B

Production sharded clusters have exactly ______ config servers

Correct Answer : C

____________ does not dump the content of the local database

Correct Answer : B

____________ works similar to HAVING clause in SQL

Correct Answer : C

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

Correct Answer : A

Which of the following mode defaults to false?

Correct Answer : A

___________ is the primary daemon process for the MongoDB system

Correct Answer : B

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

Correct Answer : C

MongoDB has been adopted as ________ software by a number of major websites and services

Correct Answer : B

To describe the message structure, a ________ like struct is used

Correct Answer : C

MongoDB applies the _____ phase to each input document in mapreduce.

Correct Answer : A

The ________ message is used to update a document in a collection

Correct Answer : B

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

Correct Answer : B

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

Correct Answer : A

The mongo shell and the drivers provide several cursor methods that call on the cursor returned by the _______ method to modify its behavior

Correct Answer : B

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

Correct Answer : C

Which of the following format is supported by MongoDB?

Correct Answer : C

Point out the wrong statement

Correct Answer : D

Which of the following method returns one document?

Correct Answer : A

__________ is a diagnostic tool for inspecting BSON files

Correct Answer : B