AWS Interview Questions-2

1.      Q: What is Amazon Web Services (AWS)?

A: Amazon Web Services (AWS) is a collection of remote computing services (also called web services) that make up a cloud computing platform, offered by Amazon.com. These services operate from 12 geographical regions across the world.

2.      Q: What are the main services offered by Amazon AWS?

A: The main services offered by Amazon AWS include:

·        Elastic Compute Cloud (EC2) for scalable computing capacity

·        Simple Storage Service (S3) for object storage

·        Elastic Block Store (EBS) for block storage

·        CloudFront for content delivery

·        RDS for managed relational databases

·        DynamoDB for managed NoSQL databases

·        Elastic MapReduce (EMR) for big data processing

3.      Q: What is Amazon Elastic Compute Cloud (EC2)?

A: Amazon Elastic Compute Cloud (EC2) is a web service that provides resizable compute capacity in the cloud. It allows users to rent virtual computers on which to run their own computer applications.

4.      Q: What is Amazon Simple Storage Service (S3)?

A: Amazon Simple Storage Service (S3) is an object storage service that offers industry-leading scalability, data availability, security, and performance. This means customers of all sizes and industries can use it to store and protect any amount of data for a range of use cases, such as websites, mobile applications, backup and restore, archive, enterprise applications, IoT devices, and big data analytics.

5.      Q: What is Amazon Elastic Block Store (EBS)?

A: Amazon Elastic Block Store (EBS) is a block storage service for Amazon Elastic Compute Cloud (EC2) instances. EBS allows users to create storage volumes and attach them to EC2 instances. These volumes function like raw, unformatted external block devices, and they can be formatted with a file system or used as raw block devices.

6.      Q: What is Amazon Elastic MapReduce (EMR)?

A: Amazon Elastic MapReduce (EMR) is a web service that makes it easy to process big data using the Hadoop framework. EMR enables users to run big data frameworks such as Apache Hadoop, Apache Spark, and Apache Hive on a fully managed cluster in the cloud. It also supports the use of other popular big data processing engines such as Apache Pig and Apache HBase.

7.      Q: What is Amazon CloudFront?

A: Amazon CloudFront is a content delivery network (CDN) that securely delivers data, videos, applications, and APIs to customers globally. It integrates with other Amazon Web Services products to give developers and businesses an easy way to distribute content to end users with low latency and high data transfer speeds.

8.      Q: What is Amazon Elastic Container Service (ECS)?

A: Amazon Elastic Container Service (ECS) is a fully managed container orchestration service that makes it easy to run, stop, and manage Docker containers on a cluster. It supports both Fargate and EC2 launch types, and automatically scales the number of containers to match the resources available in the cluster.

9.      Q: What is Amazon Relational Database Service (RDS)?

A: Amazon Relational Database Service (RDS) is a web service that makes it easy to set up, operate, and scale a relational database in the cloud. RDS supports multiple database engines, including Amazon Aurora, MySQL, MariaDB, Oracle, and Microsoft SQL Server.

10.   Q: What is Amazon DynamoDB?

A: Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. It enables users to offload the administrative burdens of operating and scaling distributed databases to AWS, so they don't have to worry about hardware provisioning, setup and configuration, replication, software patching, or cluster scaling.

11.   Q: What is Amazon Elasticsearch Service?

A: Amazon Elasticsearch Service (Amazon ES) is a fully managed service that makes it easy to deploy, operate, and scale Elasticsearch clusters in the AWS Cloud. With Amazon ES, users can create a new cluster in minutes, using the AWS Management Console, AWS CLI, or SDKs.

12.   Q: What is Amazon AppStream?

A: Amazon AppStream is a fully managed, secure application streaming service that allows users to stream their full-featured applications from the cloud to virtually any device, without the need for local installation.

13.   Q: What is Amazon Elastic Kubernetes Service (EKS)?

A: Amazon Elastic Kubernetes Service (EKS) is a fully managed Kubernetes service that makes it easy to deploy, scale, and operate containerized applications using Kubernetes on AWS. EKS automates the deployment, scaling, and management of Kubernetes control plane, and integrates with other AWS services to provide customers with a secure and scalable environment for their applications.

14.   Q: What is Amazon VPC?

A: Amazon Virtual Private Cloud (VPC) enables users to launch Amazon Web Services (AWS) resources into a virtual network that they've defined. This virtual network closely resembles a traditional network that users would operate in their own data center, with the benefits of using the scalable infrastructure of AWS.

15.   Q: What is Amazon Route 53?

A: Amazon Route 53 is a highly available and scalable Cloud Domain Name System (DNS) web service. It routes end-users to Internet applications by translating human-friendly domain names, like www.example.com, into the IP addresses, like 192.0.2.1, that computers use to connect to each other.

16.   Q: What is Amazon CloudWatch?

A: Amazon CloudWatch is a monitoring service for AWS resources and the applications that run on AWS. It provides data and operational insights for various AWS resources, including Amazon Elastic Compute Cloud (EC2) instances and Amazon RDS DB instances, as well as custom metrics generated by users' applications and services, and any log files.

17.   Q: What is Amazon Elastic Transcoder?

A: Amazon Elastic Transcoder is a media transcoding service that converts media files from their original source format into different formats that will play on devices like smartphones, tablets, and PCs. It is used to create versions of media files optimized for different devices and network connections.

18.   Q: What is Amazon API Gateway?

A: Amazon API Gateway is a fully managed service that makes it easy for developers to create, publish, maintain, monitor, and secure APIs at any scale. It allows you to create RESTful, HTTP, and WebSocket APIs that enable applications to access back-end services via the front-end.

19.   Q: What is Amazon SQS?

A: Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications. SQS eliminates the complexity and overhead associated with managing and operating message oriented middleware, and empowers developers to focus on differentiating work.

20.   Q: What is Amazon Elastic File System (EFS)?

A: Amazon Elastic File System (EFS) is a fully managed file storage service for use with Amazon Elastic Compute Cloud (EC2) instances. EFS is designed to scale on demand, grow and shrink automatically as you add and remove files, and deliver high levels of aggregate throughput and IOPS.

21.   Q: What is Amazon Elastic Block Store (EBS)?

A: Amazon Elastic Block Store (EBS) is a block storage service for use with Amazon Elastic Compute Cloud (EC2) instances. EBS provides raw block-level storage of data that can be attached to EC2 instances and used as a file system, like a hard drive. It allows users to create storage volumes and attach them to EC2 instances, and also provides the ability to take snapshots of data for backup and disaster recovery purposes.

22.   Q: What is Amazon Elastic Beanstalk?

A: Amazon Elastic Beanstalk is an easy-to-use service for deploying, running, and scaling web applications and services developed with Java, .NET, PHP, Node.js, Python, Ruby, Go, and Docker on familiar servers such as Apache, Nginx, Passenger, and IIS. Elastic Beanstalk handles the provisioning of the infrastructure resources, load balancing, and automatic scaling, and allows users to focus on writing code for their application.

23.   Q: What is Amazon S3?

A: Amazon Simple Storage Service (S3) is an object storage service that offers industry-leading scalability, data availability, security, and performance. This means customers of all sizes and industries can use it to store and protect any amount of data for a range of use cases, such as websites, mobile applications, backup and restore, archive, enterprise applications, IoT devices, and big data analytics.

24.   Q: What is Amazon Kinesis?

A: Amazon Kinesis is a fully managed service for real-time processing of streaming data at massive scale. It allows you to collect, process, and analyze streaming data such as video, audio, application logs, website clickstreams, and IoT telemetry data for applications like real-time analytics, data processing, and stream processing.

25.   Q: What is Amazon Pinpoint?

A: Amazon Pinpoint is a fully managed service that makes it easy to run targeted campaigns to improve user engagement in mobile and web applications. Pinpoint enables customers to understand user behavior, define segments, and target specific groups of users with relevant messaging across multiple channels, including email, SMS, push notifications, and in-app messaging.

26.   Q: What is Amazon Glue?

A: Amazon Glue is a fully managed extract, transform, and load (ETL) service that makes it easy for customers to prepare and load their data for analytics. Glue ETL jobs and development endpoints are defined by Python or Scala code, and Glue also enables customers to use their own libraries. It also has built-in classifiers for popular data formats, including JSON, CSV, web logs, and more.

27.   Q: What is Amazon SageMaker?

A: Amazon SageMaker is a fully managed service that enables developers and data scientists to quickly and easily build, train, and deploy machine learning models at any scale. SageMaker provides a suite of tools for data processing, model training, and model deployment, as well as integration with other AWS services like S3, ECR, and ECS.

28.   Q: What is Amazon Elasticsearch Service?

A: Amazon Elasticsearch Service is a fully managed service that makes it easy to deploy, operate, and scale Elasticsearch clusters in the AWS Cloud. Elasticsearch is a popular open-source search and analytics engine designed to store, search, and analyze large volumes of data quickly and in near real time. Elasticsearch Service allows users to set up, operate, and scale Elasticsearch clusters with ease, while also providing advanced security and monitoring features.

29.   Q: What is Amazon CloudFormation?

A: Amazon CloudFormation is a service that helps users model and set up their Amazon Web Services resources so they can spend less time managing infrastructure and more time focusing on their applications that run in AWS. CloudFormation allows users to use templates to provision and manage a collection of AWS resources, and also supports JSON and YAML templates.

30.   Q: What is Amazon Elastic Container Service (ECS)?

A: Amazon Elastic Container Service (ECS) is a fully managed container orchestration service that makes it easy to run, stop, and manage Docker containers on a cluster. ECS works with Amazon Elastic Container Registry (ECR) to host and manage container images, and integrates with other AWS services like Elastic Load Balancing and Amazon CloudWatch for monitoring and logging.

31.   Q: What is Amazon Elastic Container Service for Kubernetes (EKS)?

A: Amazon Elastic Container Service for Kubernetes (EKS) is a managed Kubernetes service that makes it easy to run, scale, and manage containerized applications using Kubernetes on AWS. EKS allows you to run Kubernetes without the need to stand up or maintain your own Kubernetes control plane.

32.   Q: What is Amazon AppStream 2.0?

A: Amazon AppStream 2.0 is a fully managed, secure application streaming service that allows users to stream desktop applications from AWS to any device running a web browser, without rewriting them. It enables users to centrally manage and deploy applications in the cloud, while users can access them from anywhere on any device.

33.   Q: What is Amazon DynamoDB?

A: Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. It allows users to create tables and store any amount of data, and serves any level of request traffic. DynamoDB supports both document and key-value data models, and has built-in security, backup and restore, and in-memory caching.

34.   Q: What is Amazon QuickSight?

A: Amazon QuickSight is a fully managed business intelligence service that makes it easy to deliver insights to everyone in an organization. QuickSight allows users to create and publish interactive dashboards, and perform ad-hoc analysis, that can be accessed by users via web or mobile devices. It also integrates with other AWS services to allow users to connect to data sources, perform data preparation and visualize data.

35.   Q: What is Amazon Elastic File System (EFS)?

A: Amazon Elastic File System (EFS) is a fully managed, file storage service for use with Amazon Elastic Compute Cloud (EC2) instances. EFS provides a simple, scalable file storage that can be accessed from multiple EC2 instances simultaneously, making it useful for applications that require shared access to data. EFS supports the Network File System (NFS) protocol and it's compatible with the Linux operating system.

36.   Q: What is Amazon CloudFront?

A: Amazon CloudFront is a content delivery network (CDN) service that securely delivers data, videos, applications, and APIs to customers globally. CloudFront integrates with other Amazon Web Services products to give developers and businesses an easy way to distribute content to end users with low latency, high data transfer speeds, and no commitments.

37.   Q: What is Amazon RDS?

A: Amazon Relational Database Service (RDS) is a fully managed relational database service that makes it easy to set up, operate, and scale a relational database in the cloud. RDS supports multiple database engines such as MySQL, MariaDB, PostgreSQL, Oracle, and Microsoft SQL Server. RDS handles routine database tasks such as provisioning, patching, backup, recovery, and failure detection.

38.   Q: What is Amazon Redshift?

A: Amazon Redshift is a fully managed, petabyte-scale data warehouse service that makes it simple and cost-effective to efficiently analyze all your data using your existing business intelligence tools. Redshift is based on PostgreSQL and it allows you to run complex analytic queries against petabytes of structured data, using sophisticated query optimization, columnar storage on high-performance local disks, and massively parallel query execution.

39.   Q: What is Amazon Elastic Transcoder?

A: Amazon Elastic Transcoder is a fully managed, easy-to-use service that lets you convert media files from their original source format into versions that will play on devices like smartphones, tablets and PCs. Elastic Transcoder can be used to convert videos, audio files, images, and other multimedia files into different file formats and resolutions.

40.   Q: What is Amazon AppSync?

A: Amazon AppSync is a fully managed service that makes it easy to develop GraphQL APIs by handling the heavy lifting of securely connecting to data sources. AppSync automatically updates the data in web and mobile applications in real time, and updates your data schema automatically as your application evolves.