Top 30 AWS Interview Questions and Answers (2020)

By Tech-Act    
10/13/2020  204 Views

Top 30 AWS Interview Questions And Answers (2020)

The increasing demand of cloud computing platforms like AWS has made it a very attractive career option. Hence, in the race to succeed, every aspiring candidate is curious to know about what kind of questions are generally asked which would help them to pass out the exam with flying colors. So today in this blog will look at the top 30 frequently asked AWS questions and their answers. Check out below.

1. What is AWS?

The full form of AWS is Amazon Web Services. It is a collection of remote computing services and it provides infrastructure services i.e. web services which are called Cloud Computing.


2. Main Components of AWS?

The main components of AWS are Route 53, Simple Email Service, Identity and access management, Simple Storage device or (S3), Elastic Compute Cloud (EC2), Elastic Block Store (EBS), Cloud watch.


3. Define S3?

The full form of S3 is Simple Storage Service. Its interface can be used to store and retrieve the data (no limit) at any given time and from anywhere on the web. The payment model of S3 is “pay as you go”


4. Comparison between AWS and Openstack?

License in AWS is Amazon proprietary and in Openstack it is open source. The operating system in AWS depends on what the cloud administrators provides and in Openstack the Operating System depends on the AMIs provided by AWS.


5. What is the importance of buffer in Amazon web services?

Elastic Load balancer ensures that the incoming traffic is distributed optimally across various AWS. Different components are synchronized by buffer & it also makes them additionally elastic to a burst of load or traffic. The buffer creates an equilibrium which links various apparatus and crafts them. This makes them work at an identical rate to supply more rapid services.


6. Define AMI?

AMI is Amazon Machine Image. This template provides the information which is required to launch an instance that is the copy of AMI running as a virtual server in the cloud. Instances can be launched from many different AMIs.


7. Relationship between an Instance and AMI?

A single AMI is capable of launching multiple types of instances. The hardware of the host computer used for your instances is defined by the instance type. Each instances type has different computer and memory capabilities. After the launch of the instance, it looks like a traditional host and one can interact with it.


8. How can one send a request to Amazon S3?

Amazon S3 is a REST service & by using the REST API or the AWS SDK wrapper libraries that wrap the underlying Amazon S3 REST API one can send the request.


9. What is the difference between Amazon S3 and EC2?

EC2 is a cloud web service used for hosting the application and S3 is a data storage system in which unlimited data can be stored.


10. By default how many buckets can you create in AWS?

Up to 100 buckets can be created in each of your AWS accounts by default.


11. What is T2 Instances?

They are designed to provide moderate baseline performance and it has the capability to burst the higher performance as required by the workload.


12. What are the security best practices for Amazon EC2?

  • To control access of the AWS resources, use AWS identity and access management.
  • Restrict the access by allowing only trusted hosts or networks.
  • Review the security rules frequently.
  • Open up the permission that is ONLY required.
  • Password based login should be disabled.

13. Key-pairs in AWS?

They are secure login information for your virtual machines. Use key-pairs to connect to the instances, which contain a public-key and private-key.


14. Various types of Instances?

The various types of Instances are general purpose, Computer Optimized, Memory Optimized, Storage Optimized & Accelerated Computing.


15. Does Amazon VPC support the property of broadcast or multicast?

No, it doesn’t support.


16. Define roles?

  • It provides permissions to entities that can be trusted within your AWS account.
  • It is very similar to users. With roles, creating any username and password to work with the resources is not required.

17. Define Edge locations?

The area where the contents will be cached is Edge Location. So the content will automatically be searched in the edge location when a user is trying to access any content.


18. What is VPC?

VPC is Virtual Private Cloud. It enables customization of your networking configuration. This network is isolated from another network in the cloud. It allows you to have your IP address range, internet gateways, subnet and security groups.


19. What is Snowball?

Snowball is a data transport option. Source appliances are used to move a large amount of data in & out of AWS. It enables one to transfer a massive amount of data from one place to another. It makes networking cost effective


20. Define Redshift?

It is a big data warehouse product. It is one of the most powerful, fast & fully managed data warehouse service in the cloud.


21. What benefits auto-scaling brings in?

It offers fault tolerance, effective cost management and better availability.


22. What is Subnet?

Subnet is a large section of IP Address which is divided into chunks.


23. What is SQL?

SQL is Simple Queues Services. It is distributed queuing service and it acts as a mediator for two controllers.


24. Define SimpleDB?

Simple DB is also known as key value data store. It is highly available and flexible non-relational database that enables developers to request and store data with minimal database management and administrative responsibility.


25. How many AWS services are there in 2020?

The AWS Serverless Application repository is available in the AWS GovCloud (US-East) region. Hence, the availability of the services has increased to a total of 18 AWS regions that is across North America, South America, the EU & the Asia Pacific.


26. Most Economical AWS region?

The US standard is the most established and economical AWS region.


27. Popular services of AWS ?

The most popular AWS Services are Amazon S3, AWS Lambda, Amazon Glacier, Amazon EC2, Amazon SNS, Amazon CloudFront, Amazon EBS, Amazon Kinesis, Amazon VPC and Amazon SQ.


28. Amazon S3 service is globally available?

Yes, it is a global service. Object storage is provided through the web interface and it runs its global e-commerce network by using Amazon scalable storage infrastructure.


29. Advantages of AWS??

Easy to Use, Wide Range of Service, No Limitation (Server Capacity),Highly Reliable, Managed IT Services, Flexible and Affordable.


30. What is Auto Scaling?

Auto scaling enables automatic scaling of the capacity to maintain a steady and predictable performance. By using this, one can scale up various resources across various services in minutes.


All the best! Prepare well!


The increasing demand of cloud computing platforms like AWS has made it a very attractive career option. Hence, in the race to succeed, every aspiring candidate is curious to know about what kind of questions are generally asked which would help them to pass out the exam with flying colors. So today in this blog will look at the top 30 frequently asked AWS questions and their answers. Check out below.

1. What is AWS?

The full form of AWS is Amazon Web Services. It is a collection of remote computing services and it provides infrastructure services i.e. web services which are called Cloud Computing.


2. Main Components of AWS?

The main components of AWS are Route 53, Simple Email Service, Identity and access management, Simple Storage device or (S3), Elastic Compute Cloud (EC2), Elastic Block Store (EBS), Cloud watch.


3. Define S3?

The full form of S3 is Simple Storage Service. Its interface can be used to store and retrieve the data (no limit) at any given time and from anywhere on the web. The payment model of S3 is “pay as you go”


4. Comparison between AWS and Openstack?

License in AWS is Amazon proprietary and in Openstack it is open source. The operating system in AWS depends on what the cloud administrators provides and in Openstack the Operating System depends on the AMIs provided by AWS.


5. What is the importance of buffer in Amazon web services?

Elastic Load balancer ensures that the incoming traffic is distributed optimally across various AWS. Different components are synchronized by buffer & it also makes them additionally elastic to a burst of load or traffic. The buffer creates an equilibrium which links various apparatus and crafts them. This makes them work at an identical rate to supply more rapid services.


6. Define AMI?

AMI is Amazon Machine Image. This template provides the information which is required to launch an instance that is the copy of AMI running as a virtual server in the cloud. Instances can be launched from many different AMIs.


7. Relationship between an Instance and AMI?

A single AMI is capable of launching multiple types of instances. The hardware of the host computer used for your instances is defined by the instance type. Each instances type has different computer and memory capabilities. After the launch of the instance, it looks like a traditional host and one can interact with it.


8. How can one send a request to Amazon S3?

Amazon S3 is a REST service & by using the REST API or the AWS SDK wrapper libraries that wrap the underlying Amazon S3 REST API one can send the request.


9. What is the difference between Amazon S3 and EC2?

EC2 is a cloud web service used for hosting the application and S3 is a data storage system in which unlimited data can be stored.


10. By default how many buckets can you create in AWS?

Up to 100 buckets can be created in each of your AWS accounts by default.


11. What is T2 Instances?

They are designed to provide moderate baseline performance and it has the capability to burst the higher performance as required by the workload.


12. What are the security best practices for Amazon EC2?

  • To control access of the AWS resources, use AWS identity and access management.
  • Restrict the access by allowing only trusted hosts or networks.
  • Review the security rules frequently.
  • Open up the permission that is ONLY required.
  • Password based login should be disabled.

13. Key-pairs in AWS?

They are secure login information for your virtual machines. Use key-pairs to connect to the instances, which contain a public-key and private-key.


14. Various types of Instances?

The various types of Instances are general purpose, Computer Optimized, Memory Optimized, Storage Optimized & Accelerated Computing.


15. Does Amazon VPC support the property of broadcast or multicast?

No, it doesn’t support.


16. Define roles?

  • It provides permissions to entities that can be trusted within your AWS account.
  • It is very similar to users. With roles, creating any username and password to work with the resources is not required.

17. Define Edge locations?

The area where the contents will be cached is Edge Location. So the content will automatically be searched in the edge location when a user is trying to access any content.


18. What is VPC?

VPC is Virtual Private Cloud. It enables customization of your networking configuration. This network is isolated from another network in the cloud. It allows you to have your IP address range, internet gateways, subnet and security groups.


19. What is Snowball?

Snowball is a data transport option. Source appliances are used to move a large amount of data in & out of AWS. It enables one to transfer a massive amount of data from one place to another. It makes networking cost effective


20. Define Redshift?

It is a big data warehouse product. It is one of the most powerful, fast & fully managed data warehouse service in the cloud.


21. What benefits auto-scaling brings in?

It offers fault tolerance, effective cost management and better availability.


22. What is Subnet?

Subnet is a large section of IP Address which is divided into chunks.


23. What is SQL?

SQL is Simple Queues Services. It is distributed queuing service and it acts as a mediator for two controllers.


24. Define SimpleDB?

Simple DB is also known as key value data store. It is highly available and flexible non-relational database that enables developers to request and store data with minimal database management and administrative responsibility.


25. How many AWS services are there in 2020?

The AWS Serverless Application repository is available in the AWS GovCloud (US-East) region. Hence, the availability of the services has increased to a total of 18 AWS regions that is across North America, South America, the EU & the Asia Pacific.


26. Most Economical AWS region?

The US standard is the most established and economical AWS region.


27. Popular services of AWS ?

The most popular AWS Services are Amazon S3, AWS Lambda, Amazon Glacier, Amazon EC2, Amazon SNS, Amazon CloudFront, Amazon EBS, Amazon Kinesis, Amazon VPC and Amazon SQ.


28. Amazon S3 service is globally available?

Yes, it is a global service. Object storage is provided through the web interface and it runs its global e-commerce network by using Amazon scalable storage infrastructure.


29. Advantages of AWS??

Easy to Use, Wide Range of Service, No Limitation (Server Capacity),Highly Reliable, Managed IT Services, Flexible and Affordable.


30. What is Auto Scaling?

Auto scaling enables automatic scaling of the capacity to maintain a steady and predictable performance. By using this, one can scale up various resources across various services in minutes.


All the best! Prepare well!



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