20 AWS Interview Questions and Answers [Real Time]

In this article, We are going to cover AWS Interview Questions and Answers for Freshers and Experienced

Are you looking forward to the next AWS interview? If yes, then you have just visited the best blog to solve all your queries. This following article will guide you to the most asked AWS interview questions and answers.

We have designed the following set of question keeping in mind the requirements for both the beginners and experience candidates.

We advise you to give a rundown to the following set of AWS Interview Questions and Answers and extract out the best possible outcome for you post the AWS interview.

AWS Interview Questions and Answers

AWS Interview Questions and Answers

1) What do you understand by Amazon Web Services?

Answer: Amazon Web Services is one of the largest cloud computing platforms that are designed to provide various cloud services to the users in terms of database, hosting, networking and storage. Being known as Infrastructure as a Service (IaaS), AWS is a comprehensive cloud computing platform of Amazon.

2) Briefly state about the components of AWS

Answer: Some of the components of Amazon Web Services are – EBS – Elastic Block Store, EC2 – Elastic Compute Cloud, Key-Paris, S3 – Simple Storage Service, Cloudwatch and Route53.

3) What is Amazon S3 ?

Answer: The full form of Amazon S3 is Simple Storage Service. It is a platform which could be used to process any volume of information almost anywhere in the world at the same time. S3 supports developers’ web-scale computation. The payment mode of S3 is available on a pay as you go basis.

4) What do you understand by EBS Volumes ?

Answer: The full form of EBS is Elastic Block Stores. These volumes are immutable, that can be mounted to the cases. 

5) What is AMI ?

Answer: AMI stands for Amazon Machine Image. It is a blueprint that provides the necessary details (an operating system, an application server, and applications) to activate an instance that is a copy of the AMI operating in the cloud as a virtual server. Instances can be launched from as many different AMIs as possible.

6) What does AMI include ?

Answer: AMI include the following things

  1. The template for the root volume for the instance. 
  2. Launch permissions dictate which AWS accounts can be used to launch instances with the AMI. 
  3. A mapping of a block device that decides the volumes to be attached to the instance when it is started.

7) What are the storage classes available in Amazon s3 ?

Answer: Storage classes available with Amazon s3 are:

  • Amazon S3 standard
  • Amazon S3 standard-infrequent Access
  • Amazon S3 Reduced Redundancy Storage
  • Amazon Glacier

8) What are various layers of Cloud Architecture explained in AWS training ?

Answer: Different layers of cloud architecture are:

  • Cloud controller
  • Cluster controller
  • Storage Controller
  • Node Controller

9) What are the important features of Amazon cloud search ?

Answer: Important features of the Amazon cloud are:

  • Boolean searches 
  • Entire text search
  • Auto Complete advice
  • Prefix Searches
  • Range searches

10) Name some of the DB engines which can be used in AWS RDS

Answer: Some of the DB engines are –






11) List different types of cloud services

Answer: Various types of cloud services are:

Software as a Service (SaaS),

Data as a Service (DaaS)

Platform as a Service (PaaS)

Infrastructure as a Service (IaaS).

12) State briefly about EKS, ECS and Fargate.

Answer: EKS is Amazon Kubernetes managed service, or Amazon Elastic Container Service for Kubernetes. This service provides a highly accessible, controlled Kubernetes control plane, i.e. they run several master nodes for you.

ECS is Amazon’s container orchestration service, or Elastic Container Service. This service is used within clusters to handle containers and their life cycle.

Fargate is a form of ECS launch that allows you to run containers in clusters that are serverless. In other words, it enables you to run containers without the underlying cluster infrastructure having to be handled.

13) Explain these Elastic Beanstalk deployment modes:

All at once, Immutable, Rolling, Rolling with additional batches

Answer: All at once – This mode is the fastest one. In this case, all operating instances are basically stopped by Elastic Beanstalk and the revised edition is then implemented for these instances.

Rolling – Elastic Beanstalk will deploy the new version of the application to some of the currently running instances during deployment and repeat the step until all instances are running the same version. The programme can operate below capacity using this mode, but with zero downtime and no extra costs.

Immutable – Elastic Beanstalk will generate a new Auto Scaling Category in this mode and distribute the new instances therein. It will then replace the old Auto Scaling Category with the newly formed one if the deployment succeeds.

Rolling with additional batches – Elastic Beanstalk will ensure that there is no reduction in ability in this mode. This is achieved by first beginning new instances with the new application update, and only then extending the latest edition to the old instances.

14) Enumerate the type of load balancers present on AWS

Answer: There are three types of load balancers present on AWS.

Network Load Balancer – This load balancer, used for high over clocking, operates on Layer 4 of the OSI model. It can also load-balance any form of TCP traffic and, with low latency, can process massive volumes of traffic.

Application Load Balancer – This load balancer works on the OSI model’s Layer 7. It has been used to load-balance HTTP and HTTPS applications and, amongst many other features, can invoke Lambda functions.

Classic Load Balancer – This load balancer works within the OSI model of Layer 4 or Layer 7. It is now primarily used for legacy applications running on EC2-Classic, as more features are offered by application load balancers.

15) State the benefits of auto-scaling ?

Answer: The benefits of auto-scaling are –

  • Enhanced availability.
  • Optimized cost management.
  • Structured fault tolerance.

16) Define SNS, SQS and SES.

Answer: SNS (Simple Notification Service): SNS is a web service which coordinates the delivery or sending of messages to recipients and manages them.

SQS (Simple Queue Service): SQS is a fully managed message queuing service that is fast, reliable, and scalable. It makes Amazon SQS easy and cost-effective. It is a temporary repository for messages to be processed and serves as a buffer between the manufacturer of the item and the customer.

SES (Simple Email Service): SES is Amazon’s SMTP server, which is designed to easily and cost-effectively send bulk emails to customers. SES does not allow mail servers to be configured.

17) What are the database types in RDS ?

Answer: Following are the types of databases in RDS,

  • Aurora
  • Oracle
  • MYSQL server
  • PostgreSQL
  • MariaDB
  • SQL server

18) Describe the virtualization types available in AWS

Answer: Para virtualization: This is an AMI boot with an unique PV-GRUB boot loader. The guest kernel’s ability to communicate explicitly with the hypervisor leads to higher level of performance than other strategies to virtualization, but hardware extensions such as networking, GPU, etc. cannot be used. Image Virtualization may be used only for a specific service.

Hardware assisted Virtualization: HVM instances are provided with a completely virtualized hardware set and are booted by executing the master boot record of the image root block unit.

19) How many maximum Elastic IP Addresses for AWS EC2 Instance ?

Answer: You can assign five(5) maximum elastic IP addresses for AWS EC2 Instance per region.

20) How many subnets you can create per AWS VPC ?

Answer: We can create Two Hundred(200) subnets per Amazon VPC

21) How many VPC you can create in one AWS account per region ?

Answer: you can create five (5) VPC in one AWS account per region.

We have covered AWS Interview questions and answers for Beginners.


We hope you will be helped in preparation for your interviews by this compilation of AWS interview questions and answers for Freshers and Experienced professionals.

We tried to deal with all the most asked questions in AWS Interview questions and answers. Go through all the questions and give your best in the upcoming AWS interview.

If you find any related problem that is not present here, please share it in the comment section, and we will add it as soon as possible.

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