Atlas cluster creation basics in MongoDB - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is an Atlas cluster in MongoDB?

An Atlas cluster is a group of servers managed by MongoDB Atlas that store your data and handle database operations. It is like a cloud database setup you can use without managing hardware.

beginner

What are the main types of clusters you can create in MongoDB Atlas?

You can create Shared clusters (free or low cost, shared resources), Dedicated clusters (your own servers), and Serverless instances (on-demand scaling).

beginner

Why do you need to choose a cloud provider and region when creating an Atlas cluster?

Choosing a cloud provider (like AWS, Azure, or GCP) and region helps place your data close to your users for faster access and meets data location rules.

beginner

What is the purpose of setting cluster tier during Atlas cluster creation?

Cluster tier defines the size and power of your cluster, like how much memory and CPU it has. Bigger tiers handle more data and traffic but cost more.

intermediate

What is a replica set in the context of an Atlas cluster?

A replica set is a group of MongoDB servers that keep copies of the same data to provide high availability and data safety if one server fails.

Which of the following is NOT a cluster type in MongoDB Atlas?

A Shared cluster

B Local cluster

C Serverless instance

D Dedicated cluster

Local cluster is not a type in Atlas. Atlas clusters run in the cloud.

Why do you select a cloud provider when creating an Atlas cluster?

A To pick the database engine

B To decide the programming language

C To set the database schema

D To choose where your data is hosted

The cloud provider determines where your data physically lives in the cloud.

What does the cluster tier affect in an Atlas cluster?

A The size and power of the cluster

B The number of users allowed

C The database name

D The programming language used

Cluster tier sets the resources like CPU and memory for your cluster.

What is the main benefit of a replica set in Atlas?

A Data backup and high availability

B Faster queries

C Lower cost

D Simpler user interface

Replica sets keep copies of data to protect against failures.

Which region should you choose when creating an Atlas cluster?

A Any random region

B The region with the cheapest price only

C The region closest to your users

D The region with the most servers

Choosing a region near your users reduces delay and improves speed.

Explain the steps and key choices when creating a new Atlas cluster.

Think about what you decide first and why each choice matters.

Describe why replica sets are important in Atlas clusters and how they help your data.

Imagine what happens if one server stops working.