IT | Cloud Computing (IaaS, PaaS, SaaS) 🚀
Cloud Computing (IaaS, PaaS, SaaS) – 50 One-Liner Q&A
Basics of Cloud Computing
Q.1. What is cloud computing?
Ans. Delivery of computing services like storage, servers, databases, networking, and software over the internet.
Q.2. Who coined the term "Cloud Computing"?
Ans. Professor Ramnath Chellappa in 1997.
Q.3. What does "cloud" in cloud computing represent?
Ans. Internet.
Q.4. What are the main models of cloud service delivery?
Ans. IaaS, PaaS, SaaS.
Q.5. What are the main deployment models of cloud?
Ans. Public, Private, Hybrid, and Community Cloud.
IaaS (Infrastructure as a Service)
Q.6. What is IaaS?
Ans. Cloud service model providing virtualized hardware resources like servers, storage, and networking.
Q.7. Example of IaaS provider?
Ans. Amazon Web Services (AWS EC2).
Q.8. Does IaaS provide operating systems?
Ans. Yes, users can install and manage their OS.
Q.9. Does IaaS include applications?
Ans. No, applications are managed by the user.
Q.10. One key advantage of IaaS?
Ans. High scalability and cost-effectiveness.
Q.11. What type of users commonly use IaaS?
Ans. IT administrators and developers needing control over infrastructure.
Q.12. Example of IaaS product by Microsoft?
Ans. Microsoft Azure Virtual Machines.
Q.13. Example of IaaS product by Google?
Ans. Google Compute Engine.
Q.14. Example of IaaS product by IBM?
Ans. IBM Cloud Infrastructure.
Q.15. Example of open-source IaaS platform?
Ans. OpenStack.
PaaS (Platform as a Service)
Q.16. What is PaaS?
Ans. Cloud service model providing a development and deployment platform with tools, databases, and runtime environments.
Q.17. Does PaaS manage infrastructure automatically?
Ans. Yes, infrastructure and OS are managed by the provider.
Q.18. Example of PaaS by Google?
Ans. Google App Engine.
Q.19. Example of PaaS by Microsoft?
Ans. Microsoft Azure App Service.
Q.20. Example of PaaS by AWS?
Ans. AWS Elastic Beanstalk.
Q.21. Who benefits most from PaaS?
Ans. Developers who want to focus only on coding without managing infrastructure.
Q.22. Does PaaS support application scaling?
Ans. Yes, automatically.
Q.23. One disadvantage of PaaS?
Ans. Vendor lock-in.
Q.24. Is database management included in PaaS?
Ans. Yes, managed databases are often included.
Q.25. Example of open-source PaaS?
Ans. Cloud Foundry.
SaaS (Software as a Service)
Q.26. What is SaaS?
Ans. Cloud model where software applications are delivered over the internet on a subscription basis.
Q.27. Does SaaS require installation on local devices?
Ans. No, runs via web browser.
Q.28. Example of SaaS by Google?
Ans. Google Workspace (Gmail, Docs, Drive).
Q.29. Example of SaaS by Microsoft?
Ans. Microsoft 365.
Q.30. Example of SaaS in CRM?
Ans. Salesforce.
Q.31. Example of SaaS in video conferencing?
Ans. Zoom.
Q.32. Example of SaaS in project management?
Ans. Trello / Asana.
Q.33. Example of SaaS in storage?
Ans. Dropbox.
Q.34. Example of SaaS in accounting?
Ans. QuickBooks Online.
Q.35. Who benefits most from SaaS?
Ans. End users who want ready-to-use applications.
Comparison of IaaS, PaaS, SaaS
Q.36. Which model gives maximum control to users?
Ans. IaaS.
Q.37. Which model gives medium control to users?
Ans. PaaS.
Q.38. Which model gives minimum control to users?
Ans. SaaS.
Q.39. Which model is best for developers?
Ans. PaaS.
Q.40. Which model is best for businesses needing ready applications?
Ans. SaaS.
Q.41. Which model is best for enterprises needing custom infrastructure?
Ans. IaaS.
Q.42. In which model does the provider manage almost everything?
Ans. SaaS.
Q.43. In which model does the provider manage hardware only?
Ans. IaaS.
Q.44. In which model are updates and maintenance automatic?
Ans. SaaS.
Q.45. Which model reduces application development time?
Ans. PaaS.
Miscellaneous
Q.46. What is cloud elasticity?
Ans. Ability to scale resources up or down as needed.
Q.47. What is cloud scalability?
Ans. Ability to increase capacity without performance loss.
Q.48. What is serverless computing?
Ans. A cloud execution model where the provider manages servers automatically.
Q.49. Example of serverless computing?
Ans. AWS Lambda.
Q.50. What is multi-tenancy in cloud?
Ans. Multiple users sharing the same cloud resources securely.
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