Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions and Answers Freshers, Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions

Before getting on to the Cloud Computing interview questions, the student must know that the Cloud Computing is a continuously varying field which needs the students as well as professionals to upgrade their skills with the new features and knowledge, to get fit for the jobs associated with Cloud Computing. This post related to Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions and Answers Freshers, Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions will help you let out find all the solutions that are frequently asked in you upcoming Cloud Computing interview.

Over thousands of vacancies available for the Cloud Computing developers, experts must be acquaintance with all the component of Cloud Computing technologies. This is necessary for the students in order to have in-depth knowledge of the subject so that they can have best employment opportunities in the future. Knowing every little detail about Cloud Computing is the best approach to solve the problems linked with problem.

APTRON has spent hours and hours in researching about the Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions and Answers Freshers, Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions that you might encounter in your upcoming interview.  All these questions will alone help you to crack the interview and make you the best among all your competitors.

First of all, let us tell you about how the Cloud Computing technology is evolving in today’s world and how demanding it is in the upcoming years. In fact, according to one study, most of the companies and businesses have moved to the Cloud Computing. Now, you cannot predict how huge the future is going to be for the people experienced in the related technologies.

Hence, if you are looking for boosting up your profile and securing your future, Cloud Computing will help you in reaching the zenith of your career. Apart from this, you would also have a lot of opportunities as a fresher.

These questions alone are omnipotent. Read and re-read the questions and their solutions to get accustomed to what you will be asked in the interview. These Cloud Computing interview questions and answers will also help you on your way to mastering the skills and will take you to the giant world where worldwide and local businesses, huge or medium, are picking up the best and quality Cloud Computing professionals.

This ultimate list of best Cloud Computing interview questions will ride you through the quick knowledge of the subject and topics like Adopting the Cloud, Exploiting Software as a Service ( SaaS ). This Cloud Computing interview questions and answers can be your next gateway to your next job as a Cloud Computing expert.

These are very Basic Cloud Computing Interview Questions and Answers for freshers and experienced both.

Q1: What is a cloud?
A1: A cloud is an amalgamation of hardware, network, services, storage, and interfaces that aid in delivering computing as a service. It has three users :

  • End users
  • Business management users
  • cloud service provider

Q2: What is PaaS?
A2: PaaS is one of the categories of cloud computing that provides a platform and environment to let the developers build apps and services over the internet. PaaS services are hosted in the cloud and are accessed by users simply through their web browsers.

Q3: What is Saas?
A3: Software as a service (SaaS) is a software distribution model in which a third-party provider hosts applications and makes them accessible to customers over the Internet.

Q4: What is Iaas?
A4: Infrastructure as a service (IaaS) is a form of cloud computing that provides for virtualized computing resources over the internet itself. 

Q5: What is Caas?
A5: Communications as a Service (CaaS) is an outsourced scheme interactions solution that can be leased from a single vendor over the web.

Q6: What are the essential things that must be followed before going to cloud computing platform
A6: The essential things that must be followed are-

  • Compliance issues
  • Data storage types
  • Maintaining data integrity in the cloud
  • Ensuring availability and access
  • Protection from loss of data
  • Business continuity
  • Uptime – reduction of downtime

Q7: What are the different layers that define cloud architecture?
A7: The different layers used by cloud architecture are

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

Q8: How can you best secure data for transportation to the cloud?
A8: First of all make sure that your data cannot be blocked as it moves into the cloud storage by making sure that there are absolutely no data leaks —malevolent or not, from its cloud storage. This can be easily accomplished by using a secure key.

Q9: Compare Cloud and On-premise Computing?

Criteria Cloud On-premise
Initial cost Low High
Maintenance & Support Hassle-free Needs attention
Upgrade Automatic Manual
Scalability Excellent Good
Pay as you go Yes No

Q10: What are the Cloud Service Models?
A10: Infrastructure as a service (IaaS)
Platform as a service (PaaS)
Software as a service (SaaS)

Q11: Give the best example for open source Cloud Computing.
A11: OpenStack

Q12: Why Hybrid Clouds are so important?
A12: Cloud Bursting:
Access capacity or specialized software are available in public cloud and not in private cloud.
Examples: Virtual Amazon and Dynamo

Leverage best of both worlds:

  • It is VM Ware cloud
  • It is Expensive
  • Enterprise quality


  • It has commodity servers and storage.
  • It is less reliable.
  • We can run Web servers on OpenStack.
  • Database is built on VCloud.

Q13: Mention the name of some large cloud providers and databases.

  • Google Big table
  • Amazon Simple Database
  • Cloud based SQL(Sequential Query Language)

Q14: List down the three basic functioning clouds in cloud computing.

  • Professional cloud
  • Personal cloud
  • Performance cloud

Q15: What is “ EUCALYPTUS” stands for?
A15: “ EUCALYPTUS” stands for Elastic Utility Computing Architecture For Linking Your Programs To Useful Systems”

Q16: Explain what is the use of “EUCALYPTUS” in cloud computing?
A16: “Eucalyptus” is an open source software infrastructure in cloud computing, which is used to implement clusters in cloud computing platform. It is used to build public, hybrid and private clouds. It has the ability to produce your own data center into a private cloud and allows you to use its functionality to many other organizations.

Q17: What are the security laws which are implemented to secure data in a cloud ?
A17: The security laws which are implemented to secure data in cloud are

  1. Processing: Control the data that is being processed correctly and completely in an application
  2. File: It manages and control the data being manipulated in any of the file
  3. Output reconciliation:  It controls the data which has to be reconciled from input to output
  4. Input Validation: Control the input data
  5. Security and Backup: It provides security and backup it also controls the security breaches logs

Q18: What is the use of API’s in cloud services?
A18: API’s ( Application Programming Interface) is very useful in cloud platforms

  1. It eliminates the need to write the fully fledged programs
  2. It provides the instructions to make communication between one or more applications
  3. It allows easy creation of applications and link the cloud services with other systems

Q19: In cloud computing explain the role of performance cloud?
A19: Performance cloud is useful in transferring maximum amount of data instantly.  It is used by the professionals who work on high performance computing research.

Q20: How would you secure data for transport in cloud?
A20: This is the most obvious question accurued in mind that if the cloud data is secure; To ensure that, check that there is no data leak with the encryption key implemented with the data you sending while the data moves from point A to point B in cloud.

Q21: What do you mean by VPN? What does it contain?
A21: VPN stands for Virtual Private Network. VPN is a private cloud that manage the security of the data during the communication in the cloud environment. With VPN, you can make a public network as private network.

Q22: What is the difference between cloud and traditional datacenters?
A22: The cost of the traditional datacenter is higher than cloud because in traditional databases, there is overheating problems and some software and hardware issue.

Q23: What is “EUCALYPTUS” in cloud computing? Why is it used?
A23: It is an acronym stands for Elastic Utility Computing Architecture For Linking Your Program To Useful Systems. It is an open source software infrastructure in cloud computing and used to implement clusters in cloud computing platform. It creates public, private and hybrid cloud. It facilitate a user to create his own data center into a private cloud and use its functionalities to many other organizations.

Q24: What are Hybrid clouds?
A24: Hybrid clouds are the combination of public clouds and private clouds. It is preferred over both the clouds because it applies most robust approach to implement cloud architecture. It includes the functionalities and features of both the worlds. It allows organizations to create their own cloud and allow them to give the control over to someone else as well.

Q25: Why Cloud Is Necessary?
A25: Amongst those who are already using the cloud, 94 % said the infrastructure was an important part of their decision but there is not one universal cloud infrastructure which suits every environment.

Q26: Why Professional Clouds Are Required In Cloud Computing?
A26: Professional clouds are used in Cloud computing because professional clouds are used for Emails, CRM solutions and web sites etc.

Q27: What Is The Difference Between Scalability And Elasticity?
A27: Scalability is a characteristic of cloud computing through which increasing workload can be handled by increasing in proportion the amount of resource capacity. It allows the architecture to provide on demand resources if the requirement is being raised by the traffic. Whereas, elasticity is being one of the characteristic provide the concept of commissioning and decommissioning of large amount of resource capacity dynamically. It is measured by the speed by which the resources are coming on demand and the usage of the resources.

Q28: What Is The Use Of Api’s In Cloud Services?
A28: API stands for Application programming interface is very useful in cloud platforms as it allows easy implementation of it on the system. It removes the need to write full fledged programs. It provides the instructions to make the communication between one or more applications. It also allows easy to create application with ease and link the cloud services with other systems.

Q29: What Does A Vpn Consists Of?
A29: VPN is known as virtual private network and it consists of two important things:

  • Firewall:it acts as a barrier between the public network and any private network. It filters the messages that are getting exchanged between the networks. It also protects from any malicious activity being done on the network.
  • Encryption:it is used to protect the sensitive data from professional hackers and other spammers who are usually remain active to get the data. With a message always there will be a key with which you can match the key provided to you.

Q30: How User Will Gain From Utility Computing?
A30: Utility computing allow the user to pay per use means whatever they are using only for that they have to pay. It is a plug in that needs to be managed by the organizations on deciding what type of services has to be deployed from the cloud. Utility computing allows the user to think and implement the services according to them. Most organizations go for hybrid strategy that combines internal delivered services that are hosted or outsourced services.

Q31: For a transport in cloud how you can secure your data?
A31: To secure your data while moving them from one place to another, check that there is no leakage with the encryption key implemented with the data you are transferring

Q32: What is the difference in cloud computing and computing for mobiles?
A32: Cloud computing: It become active with the data with the help of internet rather than individual device. It provides users with the data which they have to retrieve on demand.

Mobile computing: It uses the same concept as cloud computing. In mobile, the applications run on the remote server and give user the access for storage and manage.

Q33: Mention the Reliability and Availability of Cloud Computing.
A33: Use of fault domains:

  • Two virtual machines are in single fault domain if a single hardware can bring down both the virtual machines.
  • Azure automatically distributes instances of a role across fault domains.

Use of Upgrade Domains:

  • When new version of software is rolled out, then only one up gradation of domain is done at a time.
  • Ensures that some instance of the service is always available.
  • Availability of the applications in the multiple instances

Storage and Network Availability:

  • Copies of data are stored in different domains.
  • Mechanism to guard against DoS and DDoS attacks.

Q34: Explain different layers which define cloud architecture
A34: Cloud computing architecture consists of many layers which help it to be more organized and can be managed from one place.

The layers are as follows:

  1. Cloud controller or CLC is the top most level in the hirerachy which is used to manage the virtualized resources like servers, network and storage with the user APIs.
  2. Walrus is used for the storage and act as a storage controller to manage the demands of the users. It maintains a scalable approach to control the virtual machine images and user data.
  3. Cluster Controller or CC is used to control all the virtual machines for executions the virtual machines are stored on the nodes and manages the virtual networking between Virtual machines and external users.
  4. Storage Controller or SC provides a storage area in block form that are dynamically attached by Virtual machines.
  5. Node Controller or NC is at the lowest level and provides the functionality of a hypervisor that controls the VMs activities, which includes execution, management and termination of many instances.

Q35: What is the requirement of virtualization platforms in implementing cloud?
A35: Virtualization is the basis of the cloud computing and there are many platforms that are available like VMware is a technology that provides the provision to create private cloud and provide a bridge to connect external cloud with private cloud.

There are three key features that have to be identified to make a private cloud that is:

– Cloud operating system.
– Manage the Service level policies
– Virtualization keeps the user level and the backend level concepts different from each other so that a seamless environment can be created between both.

Q36: What are system integrators?
A36: Systems integrators are the important part of cloud computing platform. It provides the strategy of the complicated process used to design a cloud platform. It includes well defined architecture to find the resources and the characteristics which have to be included for cloud computing. Integrators plan the users cloud strategy implementation. Integrators have knowledge about data center creation and also allow more accurate private and hybrid cloud creation.

Cloud Computing Conclusion Interview FAQs

We know the list of Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions and Answers Freshers, Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions is overwhelming but the advantages of reading all the questions will maximize your potential and help you crack the interview. The surprising fact is that this Cloud Computing interview questions and answers post covers all the basic of the Cloud Computing technology and you have to check out the FAQs of different components of Cloud Computing too.

However, you will be asked with the questions in the interview related to the above mentioned questions. Preparing and understanding all the concept of Cloud Computing technology will help you strengthen the other little information around the topic.

After preparing these interview questions, we recommend you to go for a mock interview before facing the real one. You can take the help of your friend or a Cloud Computing expert to find the loop holes in your skills and knowledge. Moreover, this will also allow you in practicing and improving the communication skill which plays a vital role in getting placed and grabbing high salaries.

Remember, in the interview, the company or the business or you can say the examiner often checks your basic knowledge of the subject. If your basics is covered and strengthened, you can have the job of your dream. The industry experts understand that if the foundation of the student is already made up, it is easy for the company to educate the employ towards advance skills. If there are no basics, there is no meaning of having learnt the subject.

Therefore, it’s never too late to edge all the basics of any technology. If you think that you’ve not acquired the enough skills, you can join our upcoming batch of Cloud Computing Training in Noida. We are one of the best institute for Cloud Computing in noida which provide advance learning in the field of Cloud Computing Course. We’ve highly qualified professionals working with us and promise top quality education to the students.

We hope that you enjoyed reading Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions and Answers Freshers, Cloud Computing Interview Questions and Answers, Cloud Computing Interview Questions and all the FAQs associated with the interview. Do not forget to revise all the Cloud Computing interview questions and answers before going for the Cloud Computing interview. In addition to this, if you’ve any doubt or query associated with Cloud Computing, you can contact us anytime. We will be happy to help you out at our earliest convenience. At last, we wish you all the best for your upcoming interview on Cloud Computing Technology.