20 Most Asked Technical Interview Questions for AWS

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  • March 20, 2023
  • AWS
20 Most Asked Technical Interview Questions for AWS

20 Most Asked Technical Interview Questions for AWS 

The way businesses and organizations operate is drastically changing in today’s modern world. The emergence of the cloud and cloud computing platforms has been a key factor in this growth as everything is becoming digital. Today, the majority of businesses use or plan to use cloud computing for many of their operations, which has caused a massive increase in demand for cloud professionals. Get enrolled in best AWS Training in Pune which has gained a tremendous reputation in Networking Courses.

Your opportunity has come if you are thinking about working in the cloud sector. Getting trained and certified in a particular platform can give you excellent career prospects, especially with cloud computing platforms like AWS taking the current business scenarios by storm.


Technical AWS Interview Questions

1. What is EC2?

You have OS-level control over EC2, a cloud-based virtual machine. This cloud server is available for use whenever you need it, and it can be used to deploy your own servers in the cloud similarly to how you would deploy servers on-premises. It can also be used when you need complete control over the hardware selection and software updates for the device.


2. What exactly is SnowBall?

Terabytes of data can be transferred both inside and outside of the AWS environment using the small programme SnowBall.


3. AWS: What is it?

AWS (Amazon Web Services) is a platform that offers secure cloud services, database storage, offerings for compute power, content delivery, and other services to support business growth.


4. What are DDoS attacks and what services can reduce them?

In a DDoS attack, a website is accessed and multiple sessions are created to prevent other authorized 

users from using the service. You can prevent DDoS attacks on your AWS services by using the following native tools:

  • AWS Shield
  • Amazon Route53
  • Amazon CloudFront
  • ELB
  • VPC


5. How crucial is the buffer function in Amazon Web Services?

Incoming traffic is optimally distributed across various AWS instances thanks to an elastic load balancer. The arrangement is made more elastic to a spike in traffic or load by the use of a buffer to synchronize the various components. When receiving and processing requests, the components are prone to working in an erratic manner. For the purpose of supplying services more quickly, the buffer establishes an equilibrium between various apparatus and trains them to operate at the same rate.


6. What are the three primary categories of cloud services, as well as the AWS products based on them, and how should they be defined and explained?

The three fundamental categories of cloud services are:




Here are some of the AWS products that are built based on the three cloud service types:

  • Computing – These include EC2, Elastic Beanstalk, Lambda, Auto-Scaling, and Lightsat.
  • Storage – These include S3, Glacier, Elastic Block Storage, Elastic File System.

Networking – These include VPC, Amazon CloudFront, Route53


7. What in CloudFront is geo-targeting?

Businesses can use the concept of geo-targeting to show their customers personalized content based on their location without altering the URL. By putting the audience’s needs first, you can use this to create content that is specifically tailored for a localized audience.


8. How come we create subnets?

A large network is divided into smaller ones by the creation of subnets. Several factors can lead to the creation of these subnets. By ensuring that traffic intended for a subnet stays in that subnet, for instance, the use of subnets can help reduce congestion. This aids in effectively routing incoming traffic to the network, lowering network load.


9. Does Amazon S3 allow for the upload of files larger than 100 megabytes?

Yes, it is possible using the AWS multipart upload tool. Larger files can be uploaded using the multipart upload feature in multiple, independent parts. By uploading these components simultaneously, you can cut down on upload time. Following upload, the components will be combined into a single item or file to produce the original file from which the components were created.


10. How many VPCs in total, per account/region, and subnets per VPC, are allowed?

Each account/region is allowed a maximum of five virtual private clouds (VPCs), each of which is allowed 200 subnets.


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11. How do the Availability Zone and Region relate to one another?

Like the US-West 1 (North California) and Asia South, AWS regions are distinct geographic regions (Mumbai). The areas that are present inside the regions are known as availability zones, on the other hand. Typically, these are autonomous, isolated zones that can duplicate themselves as needed.


12. How does auto-scaling work?

You can launch new instances whenever there is a need thanks to the auto-scaling function. Depending on the demand, you can automatically raise or lower resource capacity.


13. How does CloudFront geo-targeting work?

Without changing the URL, businesses can use the concept of geo-targeting to show their customers personalized content based on their geographic location. By keeping their needs front and center, this enables you to create content that is specifically tailored for a regional audience.


14. What are the native AWS Security logging powers?

There are logging options available for the majority of AWS services. Some of them also offer account-level logging, such as in AWS CloudTrail, AWS Config, and other programmes. Two services in particular will be examined.

AWS CloudTrail.

A history of each account’s AWS API calls is provided by this service. Your AWS environment can also be subjected to security analysis, resource change monitoring, and compliance auditing. This service’s best feature is its ability to be set up to notify you via AWS SNS when new logs are received.

AWS Configuration

You can better comprehend the environment-related configuration changes thanks to this. With this service, an AWS inventory is provided.


15. What are the various forms of virtualization offered by AWS, and what distinguishes them from one another?

In AWS, the three main types of virtualization are:

Machine Hardware Virtual (HVM)

It is fully virtualized hardware where each virtual machine functions independently of the others. A master boot record in the root block device of your image is executed to start these virtual machines.

Paravirtualization (PV) (PV)

The bootloader that starts PV AMIs is called Paravirtualization-GRUB. The kernel selected in the menu is loaded by the PV-GRUB chain.

using HVM to paravirtualized

Operating systems can benefit from storage and network I/O provided by the host with the help of PV on HVM.


16. CloudWatch: What is it?

The features of Amazon CloudWatch include:

It takes part in alarm triggering based on various metrics.

aids in keeping track of AWS environments like CPU usage, EC2, Amazon RDS instances, Amazon SQS, S3, Load Balancer, SNS, etc.


17. What does Amazon EC2 root device volume mean?

The root device drive houses the image needed to start an EC2 instance. When an Amazon AMI launches a fresh EC2 instance, this happens. Additionally, an instance store or EBS can support this root device volume. Generally speaking, the lifespan of an EC2 instance has no impact on the root device data on Amazon EBS.


18. How should you set up an Amazon S3 bucket to host static files for your open-source web application?

By setting the bucket policy to allow all objects to be read-only for the public,

There are no additional questions in our section on fundamental Amazon Web Services interview questions. The next section of AWS interview questions for seasoned professionals is now available.


19. What does Amazon’s Content Delivery Network go by?

Amazon CloudFront


20. Tell us about the main elements of AWS.

Route 53: are the main elements of AWS. An online DNS service

Easy email service: Email can be sent using a RESTFUL API call or a standard SMTP connection. Identity and Access Management: It offers improved identity management and security for your AWS account.

  • S3 or a simple storage device: It is a storage unit and the most popular AWS service.
  • EC2: Elastic Compute Cloud For hosting applications, it offers on-demand computing resources. In the event of erratic workloads, it is useful.
  • (EBS) Elastic Block Store: You can persist data thereafter the life of a single Amazon EC2 instance with the help of its persistent storage volumes that attach to EC2.
  • CloudWatch: For AWS resource monitoring, Administrators can see it through this.

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