MongoDB MongoDB Atlas and Cloud Deployment 3

Question 1

What is the Atlas connection string format used by application drivers?

Accepted Answer

mongodb+srv://username:password@cluster.mongodb.net/dbname

Answer

mongodb://username:password@host:27017

Answer

atlas://username:password@cluster-id.mongodb.net

Answer

https://cloud.mongodb.com/api/v1/connect

Question 2

What is Atlas App Services (formerly Realm) used for?

Accepted Answer

Building mobile and web applications with backend services including authentication, data sync, and serverless functions

Answer

Managing Atlas cluster hardware configurations

Answer

Configuring Atlas network access and security rules

Answer

Running MongoDB shell commands via the Atlas UI

Question 3

What does Atlas Performance Advisor recommend?

Accepted Answer

Index creation suggestions based on slow query patterns detected in the cluster

Answer

Optimal cluster tier upgrades based on billing history

Answer

Query rewrites to optimize aggregation pipelines

Answer

Shard key recommendations for existing collections

Question 4

What is the purpose of Atlas Database Users vs Atlas Organization Users?

Accepted Answer

Database Users authenticate to MongoDB clusters; Organization Users manage Atlas infrastructure via the web UI and API

Answer

They are identical; Atlas uses one user type for all access

Answer

Database Users are read-only; Organization Users have write access

Answer

Organization Users access Atlas from mobile; Database Users from desktop

Question 5

Which Atlas feature provides real-time performance metrics and allows you to kill long-running operations?

Accepted Answer

Real-Time Performance Panel

Answer

Atlas Data Explorer

Answer

Atlas Charts

Answer

Performance Advisor

Question 6

What is Atlas Serverless in MongoDB Atlas?

Accepted Answer

An instance type that automatically scales compute resources and charges based on operations consumed rather than provisioned capacity

Answer

A deployment model that removes the need for config servers

Answer

A feature that runs Atlas without any server infrastructure

Answer

A mode where MongoDB operates without a storage engine