Top AWS Interview Questions & Answers

Top AWS Interview Questions and Answers for Freshers

As AWS continues to dominate the industry, employers are seeking aws certified professionals who possess the knowledge and expertise to leverage the platform effectively.

To help you excel in your AWS interview, we have curated a comprehensive collection of top AWS interview questions. These questions are designed to assess your understanding of key AWS services, concepts, and best practices.

In this article, we have compiled a carefully crafted 50 AWS Interview Questions and Answers for freshers to help you prepare for your upcoming interview and showcase your proficiency in Amazon Web Services.

Let’s dig in!

Know About: Which AWS Certification Should I Choose?

AWS Interview Questions and Answers for Freshers

Now, let’s dive into some of the most commonly asked AWS interview questions for freshers and their detailed answers. These questions cover various aspects of AWS services, infrastructure, and best practices.

1. What is AWS?

AWS (Amazon Web Services) is a cloud computing platform provided by Amazon that offers a wide range of services for computing power, storage, database management, networking, and more.

2. What are the key components of AWS?

Some key components of AWS include:

  • Amazon EC2 (Elastic Compute Cloud)
  • Amazon S3 (Simple Storage Service)
  • Amazon RDS (Relational Database Service)
  • Amazon VPC (Virtual Private Cloud)
  • AWS Lambda

3. What is Amazon EC2?

Amazon EC2 is a web service that provides resizable compute capacity in the cloud. It allows users to create and manage virtual servers, known as instances, on which they can run their applications.

4. What is Amazon S3?

Amazon S3 is a scalable object storage service offered by AWS. It allows users to store and retrieve large amounts of data, such as files, images, and videos, in a highly available and durable manner.

5. What is AWS Lambda?

AWS Lambda is a serverless compute service provided by AWS. It allows users to run their code without provisioning or managing servers. AWS Lambda automatically scales the code based on incoming requests.

6. What is Amazon RDS?

Amazon RDS is a managed relational database service offered by AWS. It simplifies the process of setting up, operating, and scaling a relational database in the cloud.

7. What is Auto Scaling in AWS?

Auto Scaling is a feature provided by AWS that automatically adjusts the number of instances in an application based on predefined conditions. It helps in maintaining performance and cost optimization by scaling resources up or down as required.

8. What is AWS S3 bucket?

An S3 bucket is a container for storing objects in Amazon S3. It is similar to a directory or folder where you can store and organize your files. Each object in S3 is stored as a file and has a unique key associated with it.

9. What is an AMI?

An AMI (Amazon Machine Image) is a template used to create virtual servers in Amazon EC2. It contains the necessary information to launch an instance, including the operating system, software packages, and configuration settings.

10. What is Amazon CloudFront?

Amazon CloudFront is a content delivery network (CDN) service provided by AWS. It helps in distributing content, such as web pages, images, videos, and files, to users globally with low latency and high data transfer speeds.

11. What is AWS RDS Multi-AZ deployment?

AWS RDS Multi-AZ (Availability Zone) deployment is a feature that provides high availability and durability for RDS database instances. It automatically replicates data to a standby instance in a different Availability Zone, ensuring failover in case of an infrastructure failure.

12. What is Amazon DynamoDB?

Amazon DynamoDB is a fully managed NoSQL database service provided by AWS. It is designed to handle massive workloads at any scale and provides low-latency performance. DynamoDB automatically scales to accommodate high traffic and offers built-in security and backup features.

13. What is an EC2 instance type?

An EC2 instance type refers to the specifications of a virtual server in Amazon EC2. It defines the hardware of the host computer used for the instance and determines the number of CPU cores, memory, storage capacity, and network performance.

14. What is the difference between an EC2 instance store and Amazon EBS?

An EC2 instance store provides temporary block-level storage that is physically attached to the host computer. It offers high I/O performance but is not persistent and data is lost if the instance is stopped or terminated. On the other hand, Amazon EBS (Elastic Block Store) provides durable block storage volumes that can be attached to EC2 instances and persist even if the instance is stopped or terminated.

15. What is AWS CloudFormation?

AWS CloudFormation is a service that helps automate the deployment and management of AWS resources. It allows users to define infrastructure as code using JSON or YAML templates, making it easy to provision and configure resources in a repeatable and consistent manner.

16. What is an AWS S3 lifecycle policy?

An S3 lifecycle policy is a configuration that defines rules for automatically transitioning objects between different storage classes in Amazon S3 based on their age. It helps optimize storage costs by moving objects to cheaper storage tiers or by automatically archiving or deleting objects after a certain period.

17. What is AWS IAM?

AWS IAM (Identity and Access Management) is a service that helps securely control access to AWS resources. It allows users to manage users, groups, roles, and permissions to grant or deny access to AWS services and resources.

18. What is AWS CloudWatch?

AWS CloudWatch is a monitoring and observability service provided by AWS. It collects and tracks metrics, logs, and events from various AWS resources and applications. CloudWatch allows users to gain insights, troubleshoot issues, and set alarms for proactive monitoring.

19. What is AWS Elastic Beanstalk?

AWS Elastic Beanstalk is a fully managed service that makes it easy to deploy and run applications in multiple languages. It automatically handles the deployment, capacity provisioning, load balancing, and scaling of applications, allowing developers to focus on writing code.

20. What is AWS SNS?

AWS SNS (Simple Notification Service) is a fully managed messaging service that enables the sending and receiving of messages to multiple subscribers or endpoints. It supports multiple protocols, including email, SMS, HTTP, and more, making it easy to send notifications to various platforms.

21.What is the AWS Serverless Application Model (SAM)?

The AWS Serverless Application Model (SAM) is an open-source framework for building serverless applications on AWS. It provides a simplified syntax for defining serverless resources, such as Lambda functions, APIs, and event sources, making it easier to deploy and manage serverless applications.

22. What is AWS CloudFormation Stack?

An AWS CloudFormation Stack is a collection of AWS resources that are created, updated, or deleted together as a single unit. CloudFormation allows you to manage infrastructure as code, and a stack represents the state of your infrastructure at a specific point in time.

23. What is an AWS VPC Endpoint?

An AWS VPC Endpoint is a gateway that enables private connectivity between a VPC and other AWS services without requiring internet access. It allows you to securely access AWS services, such as S3 or DynamoDB, from within your VPC without going over the public internet.

24. What is AWS Identity Federation?

AWS Identity Federation is a mechanism that allows users to access AWS resources using their existing identities, such as Active Directory or social identity providers. It enables centralized identity management and provides a single sign-on experience for accessing AWS services.

25. What is AWS Direct Connect?

AWS Direct Connect is a network service that provides dedicated network connections from on-premises data centers to AWS. It offers a more reliable and consistent network performance compared to internet-based connections, making it ideal for data-intensive workloads.

26. What is the AWS Shared Responsibility Model?

The AWS Shared Responsibility Model defines the division of security responsibilities between AWS and its customers. AWS is responsible for the security “of” the cloud, meaning the security of the underlying infrastructure, while customers are responsible for the security “in” the cloud, meaning the security of their applications, data, and configurations.

27. What is AWS CloudTrail?

AWS CloudTrail is a service that provides visibility into user activity and API usage in AWS. It records API calls made within your account and delivers log files that include details such as the identity of the caller, the time of the call, and the request parameters. CloudTrail helps with compliance, auditing, and troubleshooting.

28. What is the AWS Well-Architected Framework?

The AWS Well-Architected Framework provides best practices and guidelines for designing and operating reliable, secure, and efficient workloads on AWS. It consists of a set of design principles and questions that help users evaluate and improve the architecture of their applications.

29. What is the AWS Global Infrastructure?

The AWS Global Infrastructure refers to the worldwide network of data centers and edge locations that AWS operates. It spans multiple regions and Availability Zones, providing customers with the ability to deploy applications in geographically diverse locations for high availability and low-latency performance.

30. What is AWS Elastic Load Balancer?

AWS Elastic Load Balancer (ELB) is a service that automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, or IP addresses. It helps improve the availability and scalability of applications by evenly distributing traffic and automatically balancing the load.

31.What function does buffer play in Amazon Web Services?

The distribution of incoming traffic among different AWS instances is optimised through elastic load balancer. A buffer will synchronise several parts and make the setup more elastic to a spike in traffic or demand. The elements are prone to responding to and processing queries in an erratic manner. The buffer establishes an equilibrium between diverse apparatus and trains them to operate at the same speed to deliver services more quickly.

32.Why do we make subnets?

A large network can be divided into smaller ones by using subnets. There are numerous reasons to build these subnets. For instance, by ensuring that traffic intended for a subnet remains in that subnet, the creation and use of subnets can aid in reducing congestion. This aids in effectively routing traffic entering the network, lowering the burden on the network.

33. What is AWS S3 Glacier?

AWS S3 Glacier is a storage service designed for long-term data archival and backup. It provides secure, durable, and low-cost storage options for data that is infrequently accessed. Glacier offers different retrieval options with varying retrieval times and costs to suit different data access needs.

34. What is Amazon Route 53?

Amazon Route 53 is a scalable domain name system (DNS) web service provided by AWS. It translates domain names into IP addresses, allowing users to route end users to applications effectively. Route 53 also provides health checks and DNS failover capabilities for increased availability.

34. What is AWS CloudWatch Logs?

AWS CloudWatch Logs is a service that allows you to monitor, store, and access log files from AWS resources and applications. It provides real-time log monitoring, search, and analysis capabilities to help you troubleshoot issues, monitor system performance, and gain operational insights.

35.What are the different types of instances?

The various types of instances are:

  • General purpose
  • Computer Optimized
  • Memory Optimized
  • Storage Optimized
  • Accelerated Computing

36. What is AWS RDS?

AWS RDS (Relational Database Service) is a managed database service that makes it easy to set up, operate, and scale a relational database in the cloud. It supports various database engines, including MySQL, PostgreSQL, Oracle, and SQL Server, and provides automated backups, software patching, and high availability options.

37.What is the maximum number of S3 buckets you can create?

The maximum number of 100 S3 buckests can be created.

38. What is AWS Snowball?

AWS Snowball is a service provided by Amazon Web Services (AWS) that facilitates the transfer of large amounts of data between an organization’s on-premises infrastructure and the AWS cloud. It is designed to address challenges associated with transferring terabytes or petabytes of data over the internet, where limited network bandwidth and high latency can be significant obstacles.

39. What is AWS Simple Queue Service (SQS)?

AWS Simple Queue Service (SQS) is a fully managed message queuing service that enables decoupling and scaling of distributed systems. It allows applications to send, store, and receive messages between software components, providing asynchronous communication and fault tolerance.

40. What is AWS Kinesis?

AWS Kinesis is a managed streaming data service that enables real-time processing of streaming data at scale. It allows you to collect, process, and analyze large amounts of data in real-time from various sources such as website clickstreams, IoT devices, and logs.

41. What is AWS Elastic File System (EFS)?

AWS Elastic File System (EFS) is a scalable and fully managed file storage services provided by AWS. It provides shared file storage across multiple EC2 instances and supports the Network File System (NFS) protocol. EFS is designed for use cases that require shared access to files and offers high scalability and durability.

42. What is AWS CloudTrail?

AWS CloudTrail is a service that provides audit logs of user activity and API calls within your AWS account. It captures and logs information such as who made the API call, the source IP address, the actions performed, and the response received. CloudTrail helps with security, compliance, and troubleshooting.

43. What is AWS Elastic Container Service (ECS)?

AWS Elastic Container Service (ECS) is a fully managed container orchestration service that allows you to run Docker containers in the AWS cloud. It simplifies the deployment and management of containers, handles scaling, load balancing, and integrates with other AWS services.

44. What is AWS CodeCommit?

AWS CodeCommit is a fully managed source control service provided by AWS. It allows you to securely store and manage your private Git repositories in the cloud. CodeCommit supports collaboration, version control, and integration with other AWS development tools.

45. What is Elastic Transcoder ?

The Elastic Transcoder in the AWS cloud is used to change media files into forms that can be accessed or played on gadgets like tablets, computers, smartphones, etc. Using conversion rates starting at $ 0.0075 per minute, it has powerful transcoding options.

46. What is AWS Data Pipeline?

AWS Data Pipeline is a web service that orchestrates the movement and processing of data between different AWS services and on-premises data sources. It enables you to define data workflows, schedule data processing activities, and transform and analyze data using AWS services.

47. What is Amazon Redshift?

Amazon Redshift is a fully managed data warehousing service provided by AWS. It allows you to analyze large amounts of data using SQL queries and provides high-performance and scalability. Redshift is optimized for online analytical processing (OLAP) workloads and integrates with various data sources.

48. What is AWS CloudHSM?

AWS CloudHSM (Hardware Security Module) is a service that provides dedicated hardware for cryptographic key storage and management. It helps you meet compliance requirements and secure sensitive data by offering hardware-based key storage and encryption. CloudHSM integrates with other AWS services for secure key management.

49. What is Amazon VPC?

Amazon VPC (Virtual Private Cloud) is a service that allows users to create a private network within the AWS cloud. It enables users to define their virtual network topology, including subnets, route tables, and network gateways.

50. What tools can be used to monitor AWS resources?

Some of the tools to watch the AWS resources are:

  • AWS CloudTrail
  • AWS CloudWatch
  • AWS Certificate Manager
  • Amazon EC2 Dashboard
  • NetApp Cloud Insights


Hope this guide will provide you with a solid foundation for your AWS interview preparation.  And also it is essential to supplement it with hands-on labs, sandboxes practical projects, and in-depth study of AWS documentation and whitepapers.

By familiarizing yourself with these aws interview questions and their answers, you will gain the confidence to tackle any AWS-related question that may come your way during the interview.

Get ready to demonstrate your expertise in AWS and showcase your potential as a skilled cloud professional. 

About Dharmendra Digari

Dharmendra Digari carries years of experience as a product manager. He pursued his MBA, which honed his skills of seeing products differently than others perceive. He specialises in products from the information technology and services domain, with a proven history of expertise. His skills include AWS, Google Cloud Platform, Customer Relationship Management, IT Business Analysis and Customer Service Operations. He has specifically helped many companies in the e-commerce domain establish themselves with refined and well-developed products, carving a niche for themselves.

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