Top 35 Cloud Computing Interview Questions & Answers


Cloud computing has developed as one of the prominent jobs in current times as its usability is not restricted to just IT firms.

Companies across diverse businesses such as banking, computing, retail, education, and many others have shifted to cloud computing for data storage and implementation.

You see there are endless possibilities available around. And incorporating cloud computing could be your profit-spinning move. All you have to crack down is a herd of potential software development companies like Tatvasoft, Baires Dev, ValueCoders who have a proven track record of delivering high-end latest technology-based solutions.

However, in this digital era, connections have emerged by giant strides that we can converse to one another, meeting in separate corners of the earth within a few seconds.

The resources of information are no longer confined to expansive books and libraries. Whatever the topic or theme of concern is, comprehensive knowledge is obtainable at your fingertips.

The World Wide Web covered the track for such entrance to information. However, in modern circumstances, even more, is rare. So a latent web server might provide you with a way to specific information, although it might not suffice always.

The approach of cloud computing has greatly resolved this restriction. Cloud computing has allowed users to enter a wide range of servers.

The applications of cloud computing have become remarkably popular and almost inevitable. For any digital and software situated profession, interview questions on cloud computing are the most essential parameter to grab the job.

So, to help you to go through your job interview, we have listed down some of the most popular cloud computing interview topics. With these questions crack it and thrive in your interview.

Most companies are adopting Cloud Computing to collect their business data and locate it from wherever they require it. This is the foremost reason why Cloud Computing experts are in high search all around the world.

Here are the top 32 Cloud Computing questions that you can settle for before running for a Cloud Engineer job interview:

Top Questions & Answers for You to Thrive in Cloud Computing Interview!

1. What is a Cloud?

Ans. A cloud is a combination of networks, hardware, services, storage, and interfaces that support dispensing computing as a service. Cloud has three users:

  • End users
  • Business management users
  • Cloud service providers

2. What is cloud computing?

Ans. Cloud computing is an internet centred modern age computer technology. It is the subsequent stage technology that practices the clouds to present the services whenever and wherever the user requires them. It implements a program to access various servers worldwide.

3. What are the advantages of cloud computing?

Ans. The foremost advantages of cloud computing are:

  • Data backup and storage of data.
  • Great server capacities.
  • Incremented potency.
  • Highly cost-effective and time-saving.
  • Software as Service known as SaaS.

4. Describe various standards for deployment in cloud computing?

Ans. The various deployment standards in cloud computing:

  • Private Cloud
  • Public Cloud
  • Community Cloud
  • Hybrid Cloud

5. What is the diversity in cloud computing and computing for phones?

Ans. Mobile computing practices the same theory as cloud computing. Cloud computing becomes effective with the data with the aid of the internet instead of a particular device.

It gives users the information which they have to recover on market.  In mobile, the applications operate on the remote server and provide user access for storage and management.

6. How user can obtain benefits from utility computing?

Ans. Utility computing enables the user to spend only on what they are practising. It is a plug-in operated by a company that determines what kind of services has to be extended from the cloud.

Most companies favour a hybrid strategy.

7. For transport in the cloud, how you can guard your data?

Ans. To guard your data while transporting them from one area to another, verify that there is no exposure with the encryption key executed with the data you are transmitting.

8. What are the safety aspects equipped with the cloud?

Ans. Individuality management: It empowers the application assistance

Access control: support has to be given to the users so that they can manage the way of another user who is a beginner into the cloud environment.

Authentication and Authorization: Acknowledges only the authorized and authenticated user simply to enter the data and applications

9. List out several layers which represent cloud architecture?

Ans. The various layers utilised by cloud architecture:

  • CLC or Cloud Controller
  • Walrus
  • Cluster Controller
  • SC or Storage  Controller
  • NC or Node Controller

10. What are system integrators in Cloud Computing?

Ans. In Cloud Computing, a systems integrator implements the procedure of the complex method related to design a cloud platform.

Integrator supports creating more specific hybrid and private cloud networks, as integrators have all the information about the data centre world.

11. What is “ EUCALYPTUS” stands for?

Ans. “ EUCALYPTUS” is Elastic Utility Computing Architecture For Linking Your Programs To Useful Systems”

12. Describe what is the use of “EUCALYPTUS” in cloud computing?

Ans. “Eucalyptus” is an open-source software foundation in cloud computing, which is utilised to execute clusters in the cloud computing platform. It is done to build public, hybrid and private clouds.

It can create your down retaining data market into a private cloud and enables you to practice its functionality in many other industries.

13. What is the necessity of a virtualization platform in implementing the cloud?

Ans. The basis of virtualization platform in implementing cloud is to:

  • Watch the service level policies
  • Cloud Operating System

Virtualization platforms support retaining the backend level and user level thoughts separate from each other.

14. What are the main concerns of users before using cloud computing platforms?

Ans. here are some of the user concerns before adapting cloud computing

  • Compliance
  • Loss of data
  • Data storage
  • Business continuity
  • Uptime
  • Data integrity in cloud computing

15. List out a few open-source cloud computing platform databases?

Ans. The open-source cloud computing platform databases:

  • MongoDB
  • CouchDB
  • LucidDB

16. What are the preservation laws which are performed to guard data in a cloud?

Ans. The protection laws which are performed to ensure data in the cloud are

  • Processing: Check the data that is being prepared accurately and effectively in an application
  • File: It regulates and manages the data comprising formed in any of the files
  • Output adjustment:  It manages the details which have to be adjusted from input to output
  • Input Validation: Manage the input data
  • Safety and Backup: It gives security and backup and it also manages the contract breaches logs

17. What is an AMI? How do we execute it?

Ans. AMI is Amazon Machine Image, which fundamentally is a model of your root file system. It supports the data needed to begin an instance.

We complete AMI by defining an AMI whenever we require to launch an instance. Various instances can be originated from a private AMI with an identical configuration.

In the case of driving instances with separate configurations, we would require to launch different AMIs.

18. Why are Hybrid Clouds so valuable?

Ans. Cloud Bursting: Entrance capacity and specific software are free in the public cloud and not in the private cloud.

Benefiting the best of both worlds are hybrid clouds.


  • It is a VMware cloud.
  • It is rare.
  • It provides an enterprise degree.


  • It has speciality servers and storage.
  • It is less certain.
  • We can manage web servers on OpenStack.

19. List the platforms that are utilised for large-scale Cloud Computing.

Ans. The platforms that are utilised for large-scale Cloud Computing are:

  • Apache Hadoop
  • MapReduce

20. Explain security management in terms of Cloud Computing.

Ans. Name management access gives the authorization of application services.

Access control permission is granted to users to have a comprehensive controlling way of another user who is beginning into the cloud environment.

Authentication and authorization grant support to only the authorized and authenticated users to enter the data and applications.

21. State the names of large cloud providers and databases.

Ans. below are some of the large cloud providers and databases

  • Google Bigtable
  • Amazon Simple Database
  • Cloud-based SQL (Sequential Query Language)

22. Define the difference between cloud and traditional data centres.

Ans. The traditional data centre is costly due to heating and hardware/software problems. Mostly, the expense is on the preservation of the data centres.

Cloud is mounted up when there is an improvement in charge, hence such payment concerns are not submitted in Cloud Computing.

23. What are the uses of APIs in cloud services?

Ans. APIs (Application Programming Interfaces) are practised to reduce the requirement to write entire programs.

Here, directions are given to make the connection between one or more applications.

The creation of applications is made simple and convenient for the connection of cloud services with other systems.

24. Discuss different data centre deployments of Cloud Computing.

Ans. Cloud Computing includes various data centres such as:

  • Containerized data centres: Containerized data centres are the cases that include a constant set of servers, network components, and storage delivered to huge warehouse kinds of equipment. Each deployment is comparatively unusual.
  • Low-density data centres: Containerized data centres support complex density which in turn induces much heat and important engineering troubles. On the other hand, low-density data centres are the answer to this problem. The material is organised far apart so that it reduces down the produced heat.

25. Note down the three primary functioning clouds in Cloud Computing.


  • Professional cloud
  • Personal cloud
  • Performance cloud

26. What are the features of cloud architecture that deviate from traditional cloud architecture?

Ans. The features are as given below:

In the cloud, the hardware element is affected as per the demand generated for cloud structure.

Cloud architecture is competent in scaling up support when there is a demand. Also, it manages and handles active workloads without any point of failure.

27. What are the structure blocks of cloud architecture?


  • Reference architecture
  • Technical architecture
  • Deployment operation architecture

28. Define AWS.

Ans. AWS stands for Amazon Web Services that is a combination of remote computing services known as Cloud Computing. This technology is also identified as IaaS or Infrastructure as a Service.

29. State the essential elements of AWS.

Ans. The essential elements of AWS are as follows:

  • Route 53: It is a DNS (Domain Name Server) web-based service program.
  • Simple E-mail Service: Posting of e-mail is made by utilising a RESTFUL API call or via conventional SMTP (Simple Mail Transfer Protocol).
  • Identity and Access Management: Improvised protection and identity management are presented for an AWS account.
  • Simple Storage Device (S3): It is a large storage medium, extensively applied for AWS services.
  • Elastic Compute Cloud (EC2): It provides on-demand computing support for hosting applications and useful for variable workloads.
  • Elastic Block Stores (EBS): They are storage masses connected to EC2 and provide the data lifespan of a particular EC2.
  • CloudWatch: It is practised to monitor AWS resources, and it permits managers to view and handle the keys needed. Access is given so that one can insert a notification alarm in the case of a crisis.

30. Explain how do you vertically ascend an Amazon instance.

Ans. This is one of the basic characteristics of AWS and cloud virtualization. We spin up a recently developed large case where we reflect that situation and separate the root EBS pamphlet from the server and discard it.

After that, we hold our live instance and separate its root volume related. Then, we note down the individual device ID and connect the same root volume to the current server, and restart it repeatedly. This ends in a vertically ascended Amazon instance.

31. Describe the security method in the Amazon Web Services model.

Ans. Access is granted to build a security group for a dropbox with SSH path only for port 22 open. Next, a webserver organisation and a database group are performed.

The webserver group presents 80 and 443 from around the globe, but only port 22 will be necessary amongst the jump box group. The database group provides port 3306 from the web server combination and port 22 from the jump box organisation.

The extension of any devices to the webserver group can collect in the database. No one can immediately SSH to any of our crates.

32. What are the reasons that present Amazon so great?

Ans. In Amazon, the backup storage of EBS volumes is supported by including the snapshot tools through an API call or via a GUI interface such as Elasticfox.

Also, performance is enhanced by utilising Linux software RAID and striping across four measures.


Now we’ve been through the most famous questions, let’s be prepared with them and hope that you will get these interview questions for Cloud Engineer and succeed to get the position among hundreds of applicants. We wish you luck with your upcoming interview!

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