AWS Developer Interview Questions and Answers

AWS Developer Interview Questions and Answers

Amazon Web Services (AWS) is a subsidiary of Amazon.com that provides on-demand cloud computing platforms to individuals, companies and governments, on a paid subscription basis with a free-tier option available for 12 months. The technology allows subscribers to have at their disposal a full-fledged virtual cluster of computers, available all the time, through the internet. AWS’s version of virtual computers have most of the attributes of a real computer including hardware (CPU(s) & GPU(s) for processing, local/RAM memory, hard-disk/SSD storage); a choice of operating systems; networking; and pre-loaded application software such as web servers, databases, CRM, etc. Each AWS system also virtualizes its console I/O (keyboard, display, and mouse), allowing AWS subscribers to connect to their AWS system using a modern browser. The browser acts as a window into the virtual computer, letting subscribers log-in, configure and use their virtual systems just as they would a real physical computer. They can choose to deploy their AWS systems to provide internet-based services for their own and their customers’ benefit.

Amazon Elastic Compute Cloud (EC2) provides virtual servers — called instances — for compute capacity. The EC2 service offers dozens of instance types with varying capacities and sizes, tailored to specific workload types and applications, such as memory-intensive and accelerated-computing jobs. AWS also provides an Auto Scaling tool to dynamically scale capacity to maintain instance health and performance. The Amazon EC2 Container Service and EC2 Container Registry enable customers to work with Docker containers and images on the AWS platform. A developer can also use AWS Lambda for serverless functions that automatically run code for applications and services, as well as AWS Elastic Beanstalk for PaaS. AWS also includes Amazon Lightsail, which provides virtual private servers, and AWS Batch, which processes a series of jobs.

Amazon Simple Storage Service (S3) provides scalable object storage for data backup, archival and analytics. An IT professional stores data and files as S3 objects — which can range up to 5 GB — inside S3 buckets to keep them organized. A business can save money with S3 through its Infrequent Access storage tier or use Amazon Glacier for long-term cold storage.

AWS provides managed database services through its Amazon Relational Database Service, which includes options for Oracle, SQL Server, PostgreSQL, MySQL, MariaDB and a proprietary high-performance database called Amazon Aurora. AWS offers managed NoSQL databases through Amazon Dynamo DB.

AWS provides a range of services for cloud security, including AWS Identity and Access Management (IAM), which allows admins to define and manage user access to resources. An admin can also create a user directory with Amazon Cloud Directory, or connect cloud resources to an existing Microsoft Active Directory with the AWS Directory Service. Additionally, AWS Organizations enables a business to establish and manage policies for multiple AWS accounts.

What is AWS?
What is Cloud Computing?
What is cache?

What are the layers of Cloud Computing?
Explain IaaS and PaaS and SaaS and DaaS?
What is Amazon EC2 service?

What is Amazon Machine Image (AMI)?
What is the relation between Instance and AMI?
Explain storage for Amazon EC2 instance?

Explain Elastic Block Storage?
What is AWS Storage Gateway?
Is it possible to scale an Amazon instance vertically? How?

What are the best practices for Security in Amazon EC2?
How is stopping and terminating an instance different from each other?
How is a Spot instance different from an On-Demand instance or Reserved Instance?

How can you speed up data transfer in Snowball?
What is auto-scaling?
What are lifecycle hooks used for in Auto Scaling?

What is SimpleDB?
How can you send request to Amazon S3?
How many buckets can be create in AWS by default?

What is AWS Lambda?
What is the importance of buffer in Amazon Web Services?
Name the various layers of the cloud architecture?

How the processes start, stop and terminate works?
How can you Send Request To Amazon S3?
What is the difference between Amazon S3 and Ec2?

What is a T2 instance?
What is a VirtualCPU Amazon?
What is the difference between Scalability and Elasticity?

How to Use Amazon SQS?
What is Amazon Aurora?
What is Amazon RDS?

What is Amazon DynamoDB?
What is different between Amazon RDS, Dynamo DB and Redshift?
What is AWS Identity and Access Management (IAM)?

What is configuration management?
Define NoSQL?
Define Devops?

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