100+ Top AWS Cloud Computing Interview Questions- 2024

Karishma Kochar

Karishma Kochar

Senior AWS Corporate Trainer

100+ Top AWS Cloud Computing Interview Questions- 2024
This blog post serves as a comprehensive guide to help job seekers and professionals prepare for AWS cloud computing interviews. Whether you're a beginner or an experienced developer, this post covers the most common and challenging AWS cloud computing interview questions that test your understanding of cloud architecture, services, and best practices. The post dives deep into various AWS topics, including core services like EC2, S3, VPC, and IAM, as well as advanced concepts like serverless computing, auto-scaling, security practices, and high availability strategies. By exploring these interview questions, you will not only gain insights into the practical application of AWS services but also sharpen your problem-solving skills and cloud knowledge. Key sections include: Foundational AWS Concepts: Understanding the basics of AWS services, infrastructure, and terminology. AWS Services in Focus: In-depth questions on EC2, S3, IAM, Lambda, and more. Advanced Topics: Security, networking, and high-availability setups like VPCs, CloudFormation, and Elastic Load Balancers. Real-world Scenarios: Common troubleshooting and optimization questions that assess practical skills. By the end of the post, you'll be equipped with both the technical expertise and the interview confidence needed to succeed in any AWS cloud computing interview.

Introduction: AWS Cloud Computing Interview Questions

100+ Top AWS Cloud Computing Interview Questions | 2024 | NovelVista Learning Solutions

Amazon Web Services (AWS) is a comprehensive and widely adopted cloud platform offered by Amazon. It provides a broad range of services designed to help businesses, developers, and individuals manage IT infrastructure, software, and storage needs with ease. AWS delivers scalable, on-demand compute, storage, and database resources, among other services, through a pay-as-you-go model.

Preparing for an AWS cloud computing interview can be a daunting task, but understanding the common AWS cloud computing interview questions can make a big difference. These questions often cover a broad range of topics, from foundational cloud concepts to specific AWS services and tools. Familiarizing yourself with AWS cloud computing interview questions helps you build confidence and ensures you’re ready to address various topics with clarity and precision.

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Top AWS Cloud Computing Interview Questions

When studying AWS cloud computing interview questions, it’s important to focus on both technical and practical applications. Interviewers are interested in your ability to design, manage, and troubleshoot AWS environments effectively. Practicing answers to AWS cloud computing interview questions and understanding the underlying principles behind each one will showcase your knowledge and problem-solving abilities, making you a strong candidate for any AWS-related role.

1. What is Amazon Web Services (AWS)?

AWS is a cloud computing platform provided by Amazon. It offers a variety of infrastructure services like computing power, storage, and databases, among others, on a pay-as-you-go basis.

2. What is the difference between Amazon EC2 and Amazon Lambda?

EC2 (Elastic Compute Cloud) provides scalable virtual machines for running applications on-demand. Users manage the instances, including provisioning, configuration, and scaling. Lambda is a serverless computing service that allows you to run code in response to events without managing servers. It automatically scales and charges you only for execution time.

3. What are the key components of AWS?

AWS offers a broad range of services, including: Compute services (EC2, Lambda), Storage services (S3, EBS, Glacier), Database services (RDS, DynamoDB, Aurora), Networking (VPC, Route 53, CloudFront), Security and Identity (IAM, KMS, WAF), Developer tools (CodeCommit, CodePipeline), Analytics (Athena, Redshift, EMR).

4. What is Amazon S3, and how does it work?

Amazon S3 (Simple Storage Service) is a scalable object storage service that allows you to store and retrieve large amounts of data, including backups, archives, and static assets. It offers high durability (99.999999999% availability) and integrates with other AWS services.

5. What is Amazon VPC?

Amazon VPC (Virtual Private Cloud) is a private network within the AWS cloud that enables you to launch AWS resources in a logically isolated environment. It provides control over networking features such as IP address ranges, subnets, and route tables.

6. What is the difference between S3 and EBS?

S3 (Simple Storage Service) is an object storage service optimized for large, unstructured data such as media files, backups, and logs. It's highly scalable and durable. EBS (Elastic Block Store) is block storage that provides persistent storage for EC2 instances. It's suitable for applications that require low-latency data access, such as databases.

7. What are the benefits of using AWS CloudFormation?

AWS CloudFormation allows you to define and provision AWS infrastructure as code. You can create, update, and manage a collection of AWS resources in a predictable and repeatable manner using templates written in JSON or YAML.

8. What are security groups and network ACLs in AWS?

Security Groups act as virtual firewalls for EC2 instances, controlling inbound and outbound traffic based on rules. Network ACLs (Access Control Lists) provide an additional layer of security for your VPC by controlling traffic at the subnet level. They allow or deny traffic to/from subnets.

9. What is an AWS Region and Availability Zone?

An AWS Region is a geographical area that consists of multiple Availability Zones (AZs). AZs are isolated locations within a region designed to provide fault tolerance and high availability for your applications.

10. What is the difference between a public subnet and a private subnet in AWS?

A public subnet is one that has direct access to the internet through an Internet Gateway (IGW). A private subnet is isolated from the internet but can access other resources within the VPC or internet through a NAT Gateway/Instance.

11. What is AWS Auto Scaling?

AWS Auto Scaling automatically adjusts the number of EC2 instances or resources to handle changes in traffic or demand. It ensures that you have the right amount of resources at all times, optimizing both performance and cost.

12. What are IAM roles and policies?

IAM (Identity and Access Management) Roles allow you to assign permissions to AWS services or users. They define what actions are allowed or denied by a user or service. IAM Policies are JSON documents that specify what actions are allowed or denied on specific resources.

13. What is an AWS Elastic Load Balancer (ELB)?

ELB automatically distributes incoming traffic across multiple EC2 instances to ensure high availability and fault tolerance. It supports both HTTP/HTTPS and TCP traffic, providing scalability and fault tolerance for web applications.

14. What is AWS CloudWatch and how is it used?

AWS CloudWatch is a monitoring and observability service that provides data and actionable insights for AWS resources and applications. It tracks metrics such as CPU usage, network traffic, and application logs, helping identify performance bottlenecks and operational issues.

15. Explain the concept of AWS Reserved Instances.

AWS Reserved Instances provide a discounted pricing model for EC2 instances when you commit to using them for a one- or three-year term. This allows you to save on compute costs in exchange for a long-term commitment.

16. What is Amazon RDS, and what are its benefits?

Amazon RDS (Relational Database Service) is a managed database service that simplifies the setup, operation, and scaling of relational databases such as MySQL, PostgreSQL, SQL Server, and Oracle. It automates tasks like backups, patching, and scaling.

17. What is the AWS Shared Responsibility Model?

The AWS Shared Responsibility Model defines the division of responsibilities between AWS and the customer. AWS manages the security of the cloud (hardware, software, networking) while the customer is responsible for securing their data, applications, and operating systems within the cloud.

18. What are AWS Lambda functions and how do they work?

AWS Lambda allows you to run code in response to events without managing servers. You upload your code, configure the trigger (such as an S3 upload, DynamoDB update, etc.), and Lambda executes your code automatically in a scalable manner.

19. How does AWS pricing work?

AWS pricing is based on a pay-as-you-go model, where you only pay for the resources you use (e.g., compute time, storage space). Services like EC2, S3, and RDS charge based on usage (per hour, per GB, etc.), and AWS also offers free tiers for many services with limited usage.

20. What is Amazon Glacier?

Amazon Glacier is a low-cost storage service for data archiving and long-term backup. It is designed for data that is infrequently accessed but needs to be retained for compliance or other long-term storage needs.

To succeed, thoroughly reviewing and practicing AWS cloud computing interview questions can give you the edge needed to stand out in a competitive job market.

100+ Cloud Computing Interview Questions with Answers

Get ready to ace your cloud computing interviews with these key questions and answers.