Amazon Web Services Foundation Interview Questions

1. What are the scientific community requirements in AWS?

Amazon Web Services (AWS) have the following scientific community requirements,

Computation on Demand: Renders a cost-effective and flexible on-demand infrastructure
Data Management: It takes care of handling growth of data, long-term storage and the transfer of data between different participants
Data Analysis : In this phase, a comprehensive data analysis is carried out by incorporating a robust infrastructure, flexibility and scalability
Reproducibility of results: It yields a system to build programmable infrastructure

2. List down the different foundation services provided by AWS platform.

Services	AWS Platform
Storage	Amazon S3, Amazon EBS, Amazon Storage Gateway
Compute	Auto Scale, Amazon EC2
Networking	Elastic Load balancing, AWS Direct Connect, Amazon VPC, Amazon Route 53
Database	Amazon ElastiCache, Amazon RDS, Amazon DynamoDB, Amazon SimpleDB

3. Write about Amazon Simple Storage Service

Amazon Simple Storage Service, which is also called as Amazon S3 consists of various features including distributed and replicated object stores, AWS Import/Export and AWS Storage Gateway services.

Amazon S3 is 99.999999999% durable and processes ~1 trillion objects and > 700,000 requests/second. It stores XML documents, pictures, encrypted blobs and more. The replication across AZs is performed upon the determination of AWS region.

4. What is Amazon EC2? Mention its pricing models

Amazon Elastic Compute Cloud (EC2) has virtual machines running Linux or Windows. Depending upon the usage, either Linux root privileges or full Windows administration is deployed. It is empowered by 10 GB full bisection bandwidth High-Performance Computing (HPC).

Amazon EC2 has three types of storage such as Elastic Block Storage, Ephemeral Storage and Solid State Drives (SSDs).

Pricing Models

Amazon EC2 has the following pricing models,

Spot
Reserved Instances (Light, Moderate and heavy)
On-Demand and
Dedicated Instances

5. What is the difference between AWS CloudFormation, Amazon CloudWatch and AWS Elastic Beanstalk?

AWS CloudFormation		Amazon CloudWatch	AWS Elastic Beanstalk
It is a part of Deployment services	It is a part of Monitoring services	It is a part of Automation services
Application is used to create a collection of related AWS	AWS resources will be monitored for applications to keep running smoothly	An Apache Tomcat Environment is provisioned to deploy your Java applications
Used applications will be updated regularly	The monitoring of applications avoids frequent updating , instead, it keeps an eye to track metrics and it eventually provides a way to gain insight	AWS Elastic Beanstalk is maintained automatically.

6. Name the Higher-Level services of AWS