Q121
Q121 How can you identify and terminate long-running operations in MongoDB?
Use the db.killOp() method with the operation ID
Restart the MongoDB server
Increase the server's processing power
Modify the application's code to limit execution time
Q122
Q122 What might cause an increase in the number of page faults in MongoDB?
Insufficient memory
Inefficient indexes
Network bottlenecks
High server load
Q123
Q123 If write operations in MongoDB suddenly become slower, what could be a primary reason?
Limited disk space
High server load
Inefficient write concern settings
Database schema changes
Q124
Q124 What is the purpose of the MongoDB Node.js driver?
To convert MongoDB data to Node.js formats
To facilitate communication between a Node.js application and MongoDB
To optimize Node.js performance
To provide additional security features for Node.js applications
Q125
Q125 How do you manage asynchronous operations in MongoDB when using Node.js?
Using callbacks
Using the async/await syntax
Using XMLHTTPRequest
Using synchronous operations
Q126
Q126 What is Mongoose in the context of Node.js and MongoDB?
A MongoDB GUI tool
A Node.js framework
An ORM for MongoDB in Node.js
A data validation library
Q127
Q127 What advantage does using the Mongoose library provide for Node.js applications working with MongoDB?
Improved database performance
Automated MongoDB installation
Simplified data modeling and validation
Enhanced security features
Q128
Q128 How does the use of schema in Mongoose benefit a MongoDB application in Node.js?
It enforces a rigid structure on the MongoDB database
It provides data validation and type casting
It increases the speed of MongoDB queries
It automatically encrypts sensitive data
Q129
Q129 In a Node.js application, how can you handle transactions with MongoDB?
Transactions are not supported in MongoDB with Node.js
Using the startTransaction method in the MongoDB Node.js driver
By manually managing state reversals on errors
Using middleware in Node.js
Q130
Q130 How do you connect to a MongoDB database from a Node.js application?
Using the MongoDB connection URI with the mongodb.connect() function
Using a special Node.js MongoDB library
Through direct socket programming
By configuring a Node.js environment variable
Q131
Q131 How can you perform a query to find all documents in a collection with a specific field value in MongoDB using Node.js?
Using the collection.find({field: value}) method
Using a SQL query syntax
By downloading all documents and filtering in Node.js
Using Node.js streams
Q132
Q132 How do you use an aggregation pipeline in MongoDB with Node.js?
Using the collection.aggregate([]) method
By sending raw MongoDB aggregation queries
Through a third-party Node.js library
Aggregation is not supported in MongoDB with Node.js
Q133
Q133 What is a common issue when a Node.js application cannot connect to a MongoDB database?
Incorrect database URI
Firewall restrictions
Outdated Node.js version
Server downtime
Q134
Q134 For troubleshooting slow queries in a MongoDB database accessed from a Node.js application, what should be primarily checked?
Checking for missing indexes
Analyzing the query execution plan
Increasing the server's memory
Reviewing server logs
Q135
Q135 What is MongoDB Atlas primarily used for?
Automated backup and recovery
Database scaling and management as a service
Real-time data analytics
Enhanced security features
Q136
Q136 How does MongoDB Atlas ensure high availability?
Through automated backups only
By using sharding
By replicating data across multiple availability zones
By encrypting data
Q137
Q137 What are the benefits of using MongoDB Atlas for handling big data?
It offers larger storage capacities only
It provides advanced data analysis tools and integrations
It offers scalability and flexibility in data processing
All of the above
Q138
Q138 In MongoDB Atlas, what is the purpose of VPC Peering?
To connect the MongoDB Atlas cluster to a private network
To increase the processing speed of the database
To reduce data storage costs
To provide additional security layers
Q139
Q139 How do you connect a MongoDB Atlas cluster to an application?
Using a standard MongoDB connection string with Atlas-specific details
Using a special Atlas API key
By configuring a direct database link
By downloading a connection driver from Atlas
Q140
Q140 How can you automate database scaling in MongoDB Atlas?
By setting automatic scaling triggers based on performance metrics
By manually resizing the cluster based on usage
By using third-party tools
Scaling is not automated in MongoDB Atlas
Q141
Q141 What might be a common reason for a connection failure to a MongoDB Atlas cluster from an application?
Incorrect connection string
Firewall or network configuration issues
MongoDB Atlas service downtime
Client-side configuration errors
Q142
Q142 When encountering latency issues with MongoDB Atlas, what is a crucial area to investigate?
Atlas cluster configuration
Network latency between the application and Atlas
Resource limitations on the application side
Database indexing strategies
Q143
Q143 What is the purpose of Change Streams in MongoDB?
To monitor changes in database schema
To stream real-time data updates to applications
To optimize database performance
To track user activities
Q144
Q144 How does the use of the Aggregation Framework improve querying in MongoDB?
By simplifying queries into a single step
By allowing complex transformations and data analysis
By automatically creating indexes
By reducing data redundancy
Q145
Q145 What is the benefit of using the Oplog in MongoDB replication?
It provides a history of all database operations
It speeds up replication between nodes
It allows for point-in-time recovery
All of the above
Q146
Q146 How does MongoDB ensure data durability and consistency in a distributed environment?
Through sharding
Via the write concern and read preference settings
By using only in-memory storage
By replicating data to multiple data centers
Q147
Q147 How do you implement a transaction in MongoDB?
Using the db.transaction() function
By starting a session with startSession() and using startTransaction()
By enabling transaction mode in the database configuration
Transactions are not supported in MongoDB
Q148
Q148 To optimize a query in MongoDB for improved execution time and efficiency, what is a primary tactic?
By adding appropriate indexes
By rewriting the query in a more efficient form
By using the explain() method to analyze query performance
Refining the data schema
Q149
Q149 What should be investigated first if a MongoDB query suddenly starts taking longer to execute than usual?
Database load and performance metrics
Network latency
The size and structure of the data
Query complexity
Q150
Q150 In a sharded MongoDB environment, what could be a reason for uneven data distribution across shards?
Incorrect shard key selection
Hardware disparities among shard servers
Network issues
All of the above
