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MongoDB
5 followers study24x7 06 Feb 2025 11:41 AM study24x7 study24x7

In a sharded MongoDB environment, what could be a reason for uneven data distribution across shards?

A

Incorrect shard key selection

B

Hardware disparities among shard servers

C

Network issues

D

All of the above

Databases
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MongoDB
5 followers study24x7 05 Feb 2025 11:39 AM study24x7 study24x7

What should be investigated first if a MongoDB query suddenly starts taking longer to execute than usual?

A

Database load and performance metrics

B

Network latency

C

The size and structure of the data

D

Query complexity

Databases
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MongoDB
5 followers study24x7 05 Feb 2025 11:38 AM study24x7 study24x7

To optimize a query in MongoDB for improved execution time and efficiency, what is a primary tactic?

A

By adding appropriate indexes

B

By rewriting the query in a more efficient form

C

By using the explain() method to analyze query performance

D

Refining the data schema

Databases
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MongoDB
5 followers study24x7 05 Feb 2025 11:38 AM study24x7 study24x7

How do you implement a transaction in MongoDB?

A

Using the db.transaction() function

B

By starting a session with startSession() and using startTransaction()

C

By enabling transaction mode in the database configuration

D

Transactions are not supported in MongoDB

Databases
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MongoDB
5 followers study24x7 04 Feb 2025 11:21 AM study24x7 study24x7

How does MongoDB ensure data durability and consistency in a distributed environment?

A

Through sharding

B

Via the write concern and read preference settings

C

By using only in-memory storage

D

By replicating data to multiple data centers

Databases
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MongoDB
5 followers study24x7 04 Feb 2025 11:17 AM study24x7 study24x7

What is the benefit of using the Oplog in MongoDB replication?

A

It provides a history of all database operations

B

It speeds up replication between nodes

C

It allows for point-in-time recovery

D

All of the above

Databases
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MongoDB
5 followers study24x7 04 Feb 2025 11:12 AM study24x7 study24x7

How does the use of the Aggregation Framework improve querying in MongoDB?

A

By simplifying queries into a single step

B

By allowing complex transformations and data analysis

C

By automatically creating indexes

D

By reducing data redundancy

Databases
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MongoDB
5 followers study24x7 03 Feb 2025 10:59 AM study24x7 study24x7

What is the purpose of Change Streams in MongoDB?

A

To monitor changes in database schema

B

To stream real-time data updates to applications

C

To optimize database performance

D

To track user activities

Databases
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MongoDB
5 followers study24x7 03 Feb 2025 10:58 AM study24x7 study24x7

When encountering latency issues with MongoDB Atlas, what is a crucial area to investigate?

A

Atlas cluster configuration

B

Network latency between the application and Atlas

C

Resource limitations on the application side

D

Database indexing strategies

Databases
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MongoDB
5 followers study24x7 03 Feb 2025 10:57 AM study24x7 study24x7

What might be a common reason for a connection failure to a MongoDB Atlas cluster from an application?

A

Incorrect connection string

B

Firewall or network configuration issues

C

MongoDB Atlas service downtime

D

Client-side configuration errors

Databases
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MongoDB
5 followers study24x7 31 Jan 2025 10:42 AM study24x7 study24x7

How can you automate database scaling in MongoDB Atlas?

A

By setting automatic scaling triggers based on performance metrics

B

By manually resizing the cluster based on usage

C

By using third-party tools

D

Scaling is not automated in MongoDB Atlas

Databases
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MongoDB
5 followers study24x7 31 Jan 2025 10:42 AM study24x7 study24x7

How do you connect a MongoDB Atlas cluster to an application?

A

Using a standard MongoDB connection string with Atlas-specific details

B

Using a special Atlas API key

C

By configuring a direct database link

D

By downloading a connection driver from Atlas

Databases
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MongoDB
5 followers study24x7 31 Jan 2025 10:41 AM study24x7 study24x7

In MongoDB Atlas, what is the purpose of VPC Peering?

A

To connect the MongoDB Atlas cluster to a private network

B

To increase the processing speed of the database

C

To reduce data storage costs

D

To provide additional security layers

Databases
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MongoDB
5 followers study24x7 30 Jan 2025 11:05 AM study24x7 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

Databases
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MongoDB
5 followers study24x7 30 Jan 2025 11:04 AM study24x7 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 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 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 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 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

Databases
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MongoDB
5 followers study24x7 28 Jan 2025 10:52 AM study24x7 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

Databases
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