Top 20 AWS Interview Question and Answers For Fresher, Experienced Developer

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Amazon Web Services (AWS) is a thorough and developing cloud computing stage provided by Amazon. It gives a blend of infrastructure as a service (IaaS), platform as a service (PaaS) and software as a service (SaaS) offerings. It offers a wide arrangement of worldwide computing stockpiling, database, investigation, application, and sending administrations that assist associations to move quicker, bring down IT expenses, and scale applications.

Due to all the benefits that it provides more and more companies are deploying AWS cloud and its solutions in their infrastructure. This has created a huge surge in the market for AWS professionals. If you are someone who is skilled in AWS then you must try to land a good job profile in AWS. We have prepared a list of a few interview questions that might help you with your interview on based on AWS. These questions cover the FAQs for freshers as well as the experienced individuals.

AWS Interview Questions

  1. Describe the definition of AWS?
  2. What are the basic structures of the Amazon EC2 service?
  3. What are the main components of AWS?
  4. Explain in detail the function of Amazon Machine Image (AMI)?
  5. What is the connection between Instance and AMI?
  6. Describe storage for Amazon EC2 occurrence.
  7. How would you safeguard your EC2 instances while running it in a VPC?
  8. How many EC2 instances can you use in a VPC?
  9. How will you monitor the network traffic in your AWS VPC?
  10. What is AWS Lambada?
  11. What is a key pair and what are its uses?
  12. Describe what is S3?
  13. Can S3 be cast-off with EC2 instances, in case of “Yes” please specify How?
  14. If my AWS Direct Connect flops, will I lose my connection?
  15. Describe Amazon Machine Image and what is the connection between Instance and AMI?
  16. What is the role of a Route Table in AWS?
  17. What is the use of AWS CloudTrail?
  18. Are there any Bandwidth constraints for internet gateways?
  19. What will happen if you erase a peering connection in your side?
  20. What is the purpose of Subnets?

AWS Interview questions and answers

For any AWS professionals who are looking to attend an interview based on AWS anytime soon, here are some of the most popular interview questions and answers that might come your way in your interview. 

Q1). Describe the definition of AWS?

AWS means the Amazon Web Service; it is a gathering of remote computing facilities also identified as cloud computing stage. This new-fangled dominion of cloud computing is also recognized as IaaS which means Infrastructure as a Service.

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Q2). What are the basic structures of the Amazon EC2 service?

As the Amazon EC2 service is a cloud facility so it has entirely all the cloud features. Amazon EC2 delivers the subsequent features:

  • Virtual computing atmosphere (popular as instances)
  • Pre-configured patterns
  • Amazon Machine Images 

Q3). What are the main components of AWS?

Below mentioned are the key components of AWS:

  • Route 53: A DNS web facility
  • Easy E-mail Facility: It permits transfer of e-mail using RESTFUL API demand or through consistent SMTP
  • Self and Access Organization: It offers improved security and uniqueness management for your AWS account
  • Simple Storage Device known as S3: It is a storing device and the greatest extensively used AWS service
  • Elastic Compute Cloud is known as EC2: It offers on-demand computing properties for hosting requests. It is very valuable in case of random workloads
  • Elastic Block Store known as EBS: It delivers determined storage volumes that assign to EC2 to permit you to continue data past the lifetime of a single EC2
  • CloudWatch:To screen AWS possessions, it permits administrators to assess and gather key. Similarly, one can set an announcement alarm in case of issue 

Q4). Explain in detail the function of Amazon Machine Image (AMI)?

An Amazon Machine Image AMI is a pattern that comprises a software conformation (for instance, an operating system, a request server, and applications). From an AMI, we present an example, which is a duplicate of the AMI successively as a virtual server in the cloud. We can even offer plentiful examples of an AMI.

Q5). What is the connection between Instance and AMI?

We can launch diverse types of occurrences from a lone AMI. An example type basically controls the hardware of the host processor used for your example. Each occurrence type offers dissimilar calculate and memory competences. After we introduce an instance, it looks like an old-style host, and we can interrelate with it as we would do with any mainframe. We have comprehensive control of our examples; we can usage pseudo to run instructions that need root rights.

Q6). Describe storage for Amazon EC2 occurrence.

Amazon EC2 offers numerous data storage choices for your occurrences. Each choice has an exclusive mixture of presentation and sturdiness. These storages can be used self-sufficiently or in grouping to suit your necessities.

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There are chiefly four types of storage offered by AWS.

Describe storage for Amazon EC2 occurrence.

Q7). How would you safeguard your EC2 instances while running it in a VPC?

Security Groups can be utilized to safeguard your EC2 instances in a VPC. We can arrange both INBOUND and OUTBOUND movement in a Security Group which empowers anchored access to your EC2 occurrences.

Q8). How many EC2 instances can you use in a VPC?

You are limited to 20 EC2, however, the maximum VPC size is 65,536 instances.

Q9). How will you monitor the network traffic in your AWS VPC?

We can do it by using Amazon VPC Flow-Logs feature that is available in your VPC itself.

Q10). What is AWS Lambada?

Lambda is an event-driven stage. It is a process benefit that runs code in light of occasions and consequently deals with the computer assets required by that code

AWS Interview Questions and Answers for Experienced

Q11). What is a key pair and what are its uses?

You utilize Key Pair to log in to your Instance in an anchored way. You can make a key pair utilizing EC2 support. At the point when your occurrences are spread crosswise over locales, you have to make the key pair in every region.

Q12). Describe what is S3?

S3 is known for Simple Storage Service. You can custom S3 interface to supply and recover any quantity of data, at any time and from any place on the web. For S3, the expense model is “pay as you go”.

Q13). Can S3 be cast-off with EC2 instances, in case of “Yes” please specify How?

Yes, it can be cast-off for instances with root approaches backed by native occurrence storage. By using Amazon S3, developers have access to the similar extremely scalable, dependable, fast, low-priced data storage substructure that Amazon uses to track its own worldwide network of websites. In order to perform systems in the Amazon EC2 atmosphere, developers use the tools providing to load their Amazon Machine Images (AMIs) into Amazon S3 and to transfer them between Amazon S3 and Amazon EC2. An additional use case might be for websites hosted on EC2 to load their stationary content from S3.

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Q14). If my AWS Direct Connect flops, will I lose my connection?

If a gridlock AWS Direct connects has been arranged, in the occasion of a let-down it will change over to the second one. It is optional to permit Bidirectional Forwarding Detection (BFD) when arranging your influences to safeguard faster recognition and failover. On the other hand, if you have organized a backup IPsec VPN joining as an alternative, all VPC traffic will failover to the backup VPN connection routinely.

Q15). Describe Amazon Machine Image and what is the connection between Instance and AMI?

Amazon Web Services offers numerous ways to contact Amazon EC2, like the web-based border, AWS Command Line Interface CLI as well as Amazon Tools for Windows Power Shell. Initially, you are required to sign up for an AWS version and you can contact Amazon EC2. Amazon EC2 offers a Query API. These requirements are HTTP or HTTPS requirements that practice the HTTP verbs GET or POST and a Query constraint called Action.

Q16). What is the role of a Route Table in AWS?

Route Table is utilized to network the system pockets. By and a large one-course table would be accessible in each subnet. Course table can have any no. of records or data, subsequently appending different subnets to a course table is additionally conceivable.

Q17). What is the use of AWS CloudTrail?

CloudTrail is intended for logging and following API calls. It is also used to review all the S3 bucket accesses. 

Q18). Are there any Bandwidth constraints for internet gateways?

Ordinarily, an IG is horizontally called, and it is Redundant and Highly Available. It isn’t having any type of Bandwidth constraints as a rule.

Q19). What will happen if you erase a peering connection in your side?

The peering connection accessible in the opposite side would likewise get erased. There will be no more activity streaming.

Q20). What is the purpose of Subnets?

When a system has a greater number of hosts, dealing with these hosts can be very tasking under a solitary extensive system. Subsequently, we partition this huge system into effortless small sub-systems (subnets) with the goal that the tasks of management under each subnet winds up being less demanding.

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