MongoDB - Study24x7

MongoDB

5 followers study24x7

30 Jan 2025 11:05 AM study24x7

What are the benefits of using MongoDB Atlas for handling big data?

A

It offers larger storage capacities only

B

It provides advanced data analysis tools and integrations

C

It offers scalability and flexibility in data processing

D

All of the above

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MongoDB

5 followers study24x7

30 Jan 2025 11:04 AM study24x7

How does MongoDB Atlas ensure high availability?

A

Through automated backups only

B

By using sharding

C

By replicating data across multiple availability zones

D

By encrypting data

Databases

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MongoDB

5 followers study24x7

30 Jan 2025 11:04 AM study24x7

What is MongoDB Atlas primarily used for?

A

Automated backup and recovery

B

Database scaling and management as a service

C

Real-time data analytics

D

Enhanced security features

Databases

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MongoDB

5 followers study24x7

29 Jan 2025 10:30 AM study24x7

For troubleshooting slow queries in a MongoDB database accessed from a Node.js application, what should be primarily checked?

A

Checking for missing indexes

B

Analyzing the query execution plan

C

Increasing the server's memory

D

Reviewing server logs

Databases

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MongoDB

5 followers study24x7

29 Jan 2025 10:29 AM study24x7

What is a common issue when a Node.js application cannot connect to a MongoDB database?

A

Incorrect database URI

B

Firewall restrictions

C

Outdated Node.js version

D

Server downtime

Databases

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MongoDB

5 followers study24x7

29 Jan 2025 10:28 AM study24x7

How do you use an aggregation pipeline in MongoDB with Node.js?

A

Using the collection.aggregate([]) method

B

By sending raw MongoDB aggregation queries

C

Through a third-party Node.js library

D

Aggregation is not supported in MongoDB with Node.js

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MongoDB

5 followers study24x7

28 Jan 2025 10:52 AM study24x7

How can you perform a query to find all documents in a collection with a specific field value in MongoDB using Node.js?

A

Using the collection.find({field: value}) method

B

Using a SQL query syntax

C

By downloading all documents and filtering in Node.js

D

Using Node.js streams

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MongoDB

5 followers study24x7

28 Jan 2025 10:52 AM study24x7

How do you connect to a MongoDB database from a Node.js application?

A

Using the MongoDB connection URI with the mongodb.connect() function

B

Using a special Node.js MongoDB library

C

Through direct socket programming

D

By configuring a Node.js environment variable

Databases

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MongoDB

5 followers study24x7

28 Jan 2025 10:51 AM study24x7

In a Node.js application, how can you handle transactions with MongoDB?

A

Transactions are not supported in MongoDB with Node.js

B

Using the startTransaction method in the MongoDB Node.js driver

C

By manually managing state reversals on errors

D

Using middleware in Node.js

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MongoDB

5 followers study24x7

27 Jan 2025 12:11 PM study24x7

How does the use of schema in Mongoose benefit a MongoDB application in Node.js?

A

It enforces a rigid structure on the MongoDB database

B

It provides data validation and type casting

C

It increases the speed of MongoDB queries

D

It automatically encrypts sensitive data

Databases

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MongoDB

5 followers study24x7

27 Jan 2025 11:50 AM study24x7

What advantage does using the Mongoose library provide for Node.js applications working with MongoDB?

A

Improved database performance

B

Automated MongoDB installation

C

Simplified data modeling and validation

D

Enhanced security features

Databases

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MongoDB

5 followers study24x7

27 Jan 2025 11:45 AM study24x7

What is Mongoose in the context of Node.js and MongoDB?

A

A MongoDB GUI tool

B

A Node.js framework

C

An ORM for MongoDB in Node.js

D

A data validation library

Databases

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MongoDB

5 followers study24x7

24 Jan 2025 11:33 AM study24x7

How do you manage asynchronous operations in MongoDB when using Node.js?

A

Using callbacks

B

Using the async/await syntax

C

Using XMLHTTPRequest

D

Using synchronous operations

Databases

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MongoDB

5 followers study24x7

24 Jan 2025 11:16 AM study24x7

What is the purpose of the MongoDB Node.js driver?

A

To convert MongoDB data to Node.js formats

B

To facilitate communication between a Node.js application and MongoDB

C

To optimize Node.js performance

D

To provide additional security features for Node.js applications

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MongoDB

5 followers study24x7

24 Jan 2025 11:15 AM study24x7

If write operations in MongoDB suddenly become slower, what could be a primary reason?

A

Limited disk space

B

High server load

C

Inefficient write concern settings

D

Database schema changes

Databases

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MongoDB

5 followers study24x7

23 Jan 2025 10:41 AM study24x7

What might cause an increase in the number of page faults in MongoDB?

A

Insufficient memory

B

Inefficient indexes

C

Network bottlenecks

D

High server load

Databases

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MongoDB

5 followers study24x7

23 Jan 2025 10:40 AM study24x7

How can you identify and terminate long-running operations in MongoDB?

A

Use the db.killOp() method with the operation ID

B

Restart the MongoDB server

C

Increase the server's processing power

D

Modify the application's code to limit execution time

Databases

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MongoDB

5 followers study24x7

23 Jan 2025 10:39 AM study24x7

How do you enable slow query logging in MongoDB for queries taking longer than a specified threshold?

A

Set the slowOpThresholdMs parameter in the MongoDB configuration

B

Use the db.setProfilingLevel() method

C

Modify the query execution plan

D

Enable detailed logging for all operations

Databases

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MongoDB

5 followers study24x7

22 Jan 2025 11:11 AM study24x7

In what way does sharding impact MongoDB's performance?

A

It increases data redundancy

B

It enhances data processing speed and scalability

C

It simplifies data management

D

It reduces storage requirements

Databases

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MongoDB

5 followers study24x7

22 Jan 2025 11:10 AM study24x7

What role do MongoDB's read and write concerns play in performance tuning?

A

They determine how data is distributed across clusters

B

They control the level of data consistency and durability

C

They manage the indexing strategy

D

They optimize query execution time

Databases

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