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Welcome to the MongoDB CRUD Operations MCQs Page

Dive deep into the fascinating world of MongoDB CRUD Operations with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of MongoDB CRUD Operations, a crucial aspect of MongoDB. In this section, you will encounter a diverse range of MCQs that cover various aspects of MongoDB CRUD Operations, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within MongoDB.

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Check out the MCQs below to embark on an enriching journey through MongoDB CRUD Operations. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of MongoDB.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of MongoDB CRUD Operations. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

MongoDB CRUD Operations MCQs | Page 6 of 8

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Q51.
Which of the following flag can be set by mongo shell?

a.

Timeout

b.

noTimeout

c.

Time

d.

None of the mentioned

Discuss
Answer: (b).noTimeout
Q52.
Point out the correct statement.

a.

Intervening read operations on a document may result in a cursor that returns a document more than once if that document has changed

b.

The MongoDB server returns the query results in batches

c.

Subsequent batch size is 50 megabytes

d.

None of the mentioned

Discuss
Answer: (b).The MongoDB server returns the query results in batches
Q53.
Which of the following will display complete list of available cursor flags?

a.

cursor.Option()

b.

cursor.addOption()

c.

cursor.addOptions()

d.

all of the mentioned

Discuss
Answer: (b).cursor.addOption()
Q54.
To describe the message structure, a ________ like struct is used.

a.

Pascal

b.

C++

c.

C

d.

Java

Discuss
Answer: (c).C
Q55.
Point out the wrong statement.

a.

The MongoDB Wire Protocol is a simple socket-based, request-response style protocol

b.

For queries that include a sort operation without an index, the server must load all the documents in memory to perform the sort before returning any results

c.

Clients communicate with the database server through a regular TCP/IP socket

d.

All of the mentioned

Discuss
Answer: (d).All of the mentioned
Q56.
______________ specifies the number of documents to return in each batch of the response from the MongoDB instance.

a.

cursor.batchSize(size)

b.

cursor.Size(size)

c.

cursor.batch(size)

d.

all of the mentioned

Discuss
Answer: (a).cursor.batchSize(size)
Q57.
The __________ method returns a document that includes a metrics field.

a.

db.serverStats()

b.

db.serverStatus()

c.

db.status()

d.

all of the mentioned

Discuss
Answer: (b).db.serverStatus()
Q58.
____________ is a client or database-generated identifier that uniquely identifies this message.

a.

messageLength

b.

responseTo

c.

requestID

d.

all of the mentioned

Discuss
Answer: (c).requestID
Q59.
Which of the following operator is not very selective?

a.

$nine

b.

$nin

c.

$ain

d.

None of the mentioned

Discuss
Answer: (b).$nin
Q60.
An index cannot cover a query on a _______ collection when run against a mongos if the index does not contain the shard key.

a.

vertical

b.

sharded

c.

horizontal

d.

none of the mentioned

Discuss
Answer: (b).sharded
Page 6 of 8

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