AWS Interview Questions and Answers

Last updated on Mar 07, 2022
  • Share
aws interview questions

AWS or Amazon Web Services is one most advanced, globally renowned and secure cloud service platform which offers content delivery, database storage, compute power and a wide range of other internet-based services. The platform gives developers the flexibility to select any programming environment or development platform according to their preference. All the popular AWS interview questions and answers have been put together which will be handy if you want to crack an interview. Master your AWS knowledge with a below-mentioned set of renowned tech interviewer handpicked AWS interview questions and suggested answers for them.

Advantages of AWS

  • Easy to use application hosting platform
  • Freedom to select the operating system, application platform, programming language, database, and other services as pre preference
  • Highly cost-efficient solution
  • Excellently scalable and high performance
  • End to end approach for secure and harden infrastructure

Most Frequently Asked AWS Interview Questions

Here in this article, we will be listing frequently asked AWS Interview Questions and Answers with the belief that they will be helpful for you to gain higher marks. Also, to let you know that this article has been written under the guidance of industry professionals and covered all the current competencies.

Q11. What is lifecycle hook in AWS?

In AWS, the lifecycle hook is a feature included in the auto scaling which helps to control instance launch and termination state within the auto scaling group. It remains in a waiting mode for a certain amount of time when the instance is paused. We can create lifecycle hooks by using the command

put-lifecycle-hook. Lifecycle hooks are also customizable with various actions such as by defining a target notification for the lifecycle hook, creating an instance running script as the instance starts or determining a CloudWatch Event target to invoke functions associated with the Lambda when the lifecycle action occurs.

Q12. What is lambda and why AWS lambda is used?

AWS Lambda is an advance compute service that lets users run code without managing or provisioning servers. Users can also build here serverless applications which are composed of functions and triggered by events and automatically deployed using AWS CodeBuild and CodePipeline. The AWS Lambda is used to:

  • Build on-demand and smaller applications which are responsive to events and new information.
  • Support native Linux executables operate securely by calling them out from a supported runtime.
  • Execute code in response to triggers.
  • Real time file and stream processing.
  • Perform data sorting, filtering, validation and other changes for data in a DynamoDB table and then load them to another data store.
Q13. What is Amazon CloudFront used for?

Amazon CloudFront is an advanced content delivery network offered by AWS which provide a globally-distributed network of proxy servers that cache content such as web videos and another type of big media, locally to consumers. This exceptionally improves the access speed for downloading the content for users.

Q14. What is Load Balancer and how it works in AWS?

In AWS, the load balancer improves responsiveness and exceptionally increases the availability of applications. It sits between server firm and client accepting application traffic, incoming network and distributing that traffic across multiple backend servers with the help of various methods. It agrees with the client’s incoming traffic and routes requests to the registered targets in availability zones. The load balancer also reviews the health of registered marks and makes sure that the traffic should only be routed to useful destinations.

Q15. How to create a classic load balancer in AWS?
Follow the below mentioned steps to create a classic load balancer:
  • Select a load balancer type
  • Define that load balancer
  • Now assign security groups to that load balancer in VPC
  • Then configure health checks for EC2 instances
  • Continue with a registeringEC2 instance with a load balancer
  • Tag the load balancer
  • Now create and verify that load balancer to finish the proces
Q16. What is RDS in AWS?

Amazon RDS or Amazon Relational Database Service is a web-based service which helps users for cloud-based relational database setup, operation, and scale. It offers excellent resizable capacity and cost efficient for a relational database which is industry stranded and also manages common database administration tasks.

Q17. What is AWS subnet?
Q18. How do I create a subnet on AWS?
Q19. What is an Elastic IP in AWS?
Q20. How do I create an elastic IP on AWS?

Hence, users here will only have to pay for what they use, with low operating costs and no upfront capital costs, AWS is the most cost-efficient way available today to deliver stored data, computational resources, and other applications to end users. As AWS certification is one of the most sought-after professional skill in industry, interviewers require to prepare themselves with best AWS interview questions adequately and suggested answers to get their hands on best career rewarding jobs.

Reviewed and verified by Best Interview Question
Best Interview Question

With our 10+ experience in PHP, MySQL, React, Python & more our technical consulting firm has received the privilege of working with top projects, 100 and still counting. Our team of 25+ is skilled in...