Cloud / Amazon Web Service (AWS) Interview questions
1. What is AWS?
Amazon Web Service (AWS) is a collection of remote computing services also known as a cloud computing platform. AWS offers IaaS or Infrastructure as a Service....
2. What is AWS Elastic Beanstalk?
AWS Elastic Beanstalk is an orchestration service offered by Amazon Web Services for deploying applications that orchestrate various AWS services, including EC2, S3, Simple Notification Service, CloudWatch, autoscaling, and Elastic Load Balancers.
3. Explain AWS CodePipeline.
AWS CodePipeline is a fully managed continuous delivery service that helps you automate your release pipelines for fast and reliable application and infrastructure updates. CodePipeline automates the build, test, and deploy phases of your release process every time there is...
4. What is AWS Environment?
An environment is a collection of AWS resources running an application version. Each environment runs only one application version at a time, however, you can run the same application version or different application versions in many environments simultaneously....
5. What is Amazon Lightsail?
Lightsail is an easy-to-use cloud platform that offers you everything needed to build an application or website. Lightsail is ideal for simpler workloads, quick deployments, and getting started on AWS....
6. What is Lambda in AWS?
AWS Lambda is an event-driven, serverless computing platform provided by Amazon as a part of Amazon Web Services. It is a computing service that runs code in response to events and automatically manages the computing resources required by that code.
7. Mention a few key components of AWS?
Route 53 , is a DNS web service. Amazon VPC (Virtual Private Cloud) provides versatile network performance in AWS, which means it provides integrated security and a private cloud....
8. What is Amazon S3?
Amazon S3 or Amazon Simple Storage Service is a service offered by Amazon Web Services that provides object storage through a web service interface. S3 provides industry-leading scalability, data availability, security, and performance.
9. What is cloud computing?
Cloud computing comprises IT resources such as infrastructure, platform, or software as their services are used over the Internet on a pay-per-use basis. Cloud service providers are the companies that have public cloud or data centers that offer services like...
10. What is Amazon SES?
Amazon Simple Email Service (SES) is a flexible, and scalable email service that enables developers to send mail from within any application in a cost-effective way. Amazon SES can be configured quickly to support several email use cases, including transactional,...
11. What is AMI?
AMI (Amazon Machine Image) is a template that provides the information (an operating system, an application server, and applications) required to launch an instance, which is a copy of the AMI running as a virtual server in the cloud. You...
12. What is AWS Auto Scaling?
Auto-scaling function in AWS allows you to provision and launch new instances whenever there is a demand. It allows you to automatically increase or decrease resource capacity in relation to the demand....
13. What is AWS CloudFront?
Amazon CloudFront is a fast content delivery network(CDN) offered by Amazon Web Services. Amazon CloudFront service securely delivers data, videos, applications, and APIs to customers globally with low latency, high transfer speeds, all within a developer-friendly environment, thus improving acce
14. what is AWS CloudFormation?
AWS CloudFormation provides a common language for you to model and provision AWS and third-party application resources in your cloud environment. CloudFormation allows you to use programming languages or a simple text file to model and provision, in an automated...
15. What is VPC in AWS?
Virtual Private Cloud (VPC) allows you to customize your networking configuration. It is a network that is logically isolated from another network in the cloud.
16. What is EBS in AWS?
Elastic block storage (EBS) is a storage system that is used to store persistent data. EBS is designed to provide block-level storage volumes and to use EC2 instance for both transactions and throughput intensive workloads at any scale....
17. Difference between EBS and S3.
EBS. S3....
18. Explain Elastic IP addresses in AWS.
An Elastic IP address is a static IPv4 address designed for dynamic cloud computing. By using an Elastic IP address, you can mask the failure of an instance or software by rapidly remapping the address to another instance in your...
19. What is Amazon API Gateway?
Amazon API Gateway is a fully managed service that developers can use to create, publish, maintain, monitor, and secure APIs at any scale. APIs act as the front door for applications to access data, business logic, or functionality from your...
20. What are security groups in AWS?
A security group acts as a virtual firewall for your EC2 instances to control incoming and outgoing traffic. Inbound rules control the incoming traffic and outbound rules control the outgoing traffic for your instance....
21. What is the S3 bucket in AWS?
An Amazon S3 bucket is a public cloud storage resource available in AWS Simple Storage Service (S3). Amazon S3 buckets are similar to file folders, store objects that have data and descriptive metadata.
22. What is NAT gateway?
NAT stands for Network Address Translation. NAT gateways enable instances in a private subnet to connect to the internet but prevent the internet from initiating a connection with those instances.
23. What is Cross-Region Replication?
Cross-Region Replication is an AWS service that enables the replication of the data from one bucket to another bucket which could be in the same or different region. It provides asynchronous copying of objects.
24. Difference between Security Groups and ACLs (Access Control List) in a VPC.
Security groups are tied to an instance whereas Network ACLs are tied to the subnet. A Security Group defines which traffic is allowed TO/FROM EC2 instance.
25. Mention a few CI/CD-related services in AWS.
In AWS, there are 4 services related to CI/CD: CodeBuild, CodePipeline, CodeCommit, and CodeDeploy. All of them are fully managed....
26. What are the different types of load balancers in AWS?
There are 3 types of load balancers that are supported by Elastic Load Balancing: Application Load Balancer, Network Load Balancer, and Classic Load Balancer.
27. Different types of AWS instances.
General purpose, Computer Optimized, Memory Optimized, Storage Optimized, and Accelerated Computing.
28. Mention different layers of cloud computing?
PaaS , Platform as a Service. SaaS , Software as a Service.
29. What is an SQS dead-letter queue (DLQ)?
SQS is an AWS component, that offers a fully managed distributed queue service. Queues help handle communication between different services or other components in distributed systems....
30. What is edge location in AWS?
An edge location is a CloudFront point of presence that caches content close to users. It is not a Region or an Availability Zone.
31. What are Amazon S3 Storage Classes?
Amazon S3 offers a range of storage classes designed for different use cases. S3 Standard for general-purpose storage of frequently accessed data....
32. How to secure access to your S3 bucket?
S3 bucket can be secured in 2 ways: ACL (Access Control List) is used to manage the access of resources to buckets and objects. An object of each bucket is associated with ACL....
33. Explain AWS Policies.
Policy is an object which is associated with a resource that defines the permissions. AWS evaluates these policies when the user makes a request....
34. Types of AWS policies.
AWS supports 6 policy types. Identity-based policies, Resource-based policies, Permissions boundaries, Organizations SCPs, Access Control Lists, Session policies.
35. Compare EC2 and Amazon S3.
EC2 is a cloud web service used for hosting your application while S3 provides object/file storage (data storage).
36. What is AWS Snowball?
The AWS Snowball is a petabyte-scale data transport service that uses physical storage devices to transfer large amounts of data between Amazon Simple Storage Service (Amazon S3) and your onsite data storage location at faster-than-internet speeds. Using AWS Snowball, you...
37. What is AWS CloudTrail?
AWS CloudTrail is a service that provides compliance, operational auditing, and risk auditing of your AWS account. With CloudTrail, you can log, continuously monitor, and retain account activity related to actions across your AWS infrastructure....
38. Mentions various types of services provided by AWS.
Analytics Application Integration AR & VR AWS Cost Management Blockchain Business Applications Compute Containers Customer Enablement Database Developer Tools End User Computing Front-end Web & Mobile Game Development Internet of Things Machine Learning Management & Governance Media Services Migr
