Q.1 Which cloud service model provides virtualized hardware resources like servers, storage, and networking?
IaaS
PaaS
SaaS
FaaS
Explanation - Infrastructure as a Service (IaaS) provides fundamental computing resources such as servers, storage, and networking, which users can manage and configure.
Correct answer is: IaaS
Q.2 Which service model is best suited for software developers to build applications without managing underlying infrastructure?
SaaS
IaaS
PaaS
CaaS
Explanation - Platform as a Service (PaaS) provides a platform with development tools, frameworks, and runtime environments so developers can focus only on building applications.
Correct answer is: PaaS
Q.3 Which of the following is an example of SaaS?
Microsoft Azure Virtual Machines
Google Docs
Heroku
Amazon EC2
Explanation - SaaS delivers software applications over the internet. Google Docs is a SaaS product that allows users to create and edit documents online.
Correct answer is: Google Docs
Q.4 Which cloud model allows businesses to rent computing infrastructure on demand?
SaaS
PaaS
IaaS
DBaaS
Explanation - IaaS provides on-demand infrastructure such as virtual machines and storage, allowing businesses to scale easily.
Correct answer is: IaaS
Q.5 In SaaS, who is responsible for maintaining the software?
Customer
Cloud provider
System admin
End user
Explanation - In SaaS, the cloud provider handles software installation, updates, and maintenance, while users simply use the application.
Correct answer is: Cloud provider
Q.6 Heroku is an example of which service model?
IaaS
PaaS
SaaS
FaaS
Explanation - Heroku provides a platform for developers to deploy, manage, and scale apps without managing infrastructure, which makes it a PaaS.
Correct answer is: PaaS
Q.7 Which service model provides applications directly accessible via a web browser?
SaaS
IaaS
PaaS
FaaS
Explanation - SaaS allows users to access ready-made software applications through a web browser, such as Gmail or Google Docs.
Correct answer is: SaaS
Q.8 Amazon EC2 is an example of:
IaaS
PaaS
SaaS
CaaS
Explanation - Amazon Elastic Compute Cloud (EC2) provides virtual servers (infrastructure) for running applications, making it IaaS.
Correct answer is: IaaS
Q.9 Which model provides an abstraction layer so developers do not manage operating systems?
IaaS
PaaS
SaaS
CaaS
Explanation - PaaS abstracts infrastructure and OS, letting developers focus on application logic without worrying about hardware or system management.
Correct answer is: PaaS
Q.10 Which of the following is NOT a SaaS application?
Dropbox
Slack
VMware vSphere
Salesforce
Explanation - VMware vSphere is an IaaS solution for virtualization management, not a SaaS application.
Correct answer is: VMware vSphere
Q.11 In which model does the customer manage the operating system?
IaaS
PaaS
SaaS
FaaS
Explanation - In IaaS, customers manage the operating system and applications while the provider manages hardware and virtualization.
Correct answer is: IaaS
Q.12 Which model is ideal for businesses that only want to use software without worrying about updates?
SaaS
PaaS
IaaS
FaaS
Explanation - SaaS provides ready-to-use software with updates and maintenance handled by the provider.
Correct answer is: SaaS
Q.13 Which of these is a primary advantage of IaaS?
Automatic software updates
No coding required
Scalable infrastructure
Pre-built applications
Explanation - IaaS allows businesses to scale infrastructure resources (compute, storage, network) up or down easily.
Correct answer is: Scalable infrastructure
Q.14 Google App Engine is an example of:
IaaS
PaaS
SaaS
CaaS
Explanation - Google App Engine offers a managed platform for building and hosting applications, making it a PaaS.
Correct answer is: PaaS
Q.15 Which model is most cost-effective for end users who need simple access to tools like email?
IaaS
PaaS
SaaS
DBaaS
Explanation - SaaS provides users with ready-to-use applications like Gmail, which is cost-effective and requires no management.
Correct answer is: SaaS
Q.16 Which model allows companies to pay for only the computing power they use?
SaaS
IaaS
PaaS
On-premises
Explanation - IaaS offers on-demand infrastructure, so companies only pay for resources consumed.
Correct answer is: IaaS
Q.17 In PaaS, who manages the middleware and runtime?
Customer
Cloud provider
System admin
End user
Explanation - In PaaS, the cloud provider manages runtime, middleware, and OS, while the customer focuses on code and data.
Correct answer is: Cloud provider
Q.18 Which service model best fits for deploying a CRM system without development effort?
PaaS
IaaS
SaaS
FaaS
Explanation - SaaS provides pre-built solutions like CRM (e.g., Salesforce), where no development or infrastructure is required.
Correct answer is: SaaS
Q.19 Which of the following provides the highest level of control to the customer?
SaaS
PaaS
IaaS
All provide same control
Explanation - IaaS gives customers the most control because they manage the OS, middleware, and applications themselves.
Correct answer is: IaaS
Q.20 Which model would a developer choose if they only want to focus on writing application code?
SaaS
PaaS
IaaS
DBaaS
Explanation - PaaS handles infrastructure and system management, letting developers focus purely on application code.
Correct answer is: PaaS
Q.21 Dropbox is an example of:
IaaS
PaaS
SaaS
FaaS
Explanation - Dropbox is a SaaS product providing file storage and sharing over the internet.
Correct answer is: SaaS
Q.22 Which of these is NOT managed by the customer in IaaS?
Applications
Operating System
Networking hardware
Data
Explanation - In IaaS, the provider manages physical networking hardware, while customers handle OS, apps, and data.
Correct answer is: Networking hardware
Q.23 Which of these allows organizations to quickly test and deploy applications without hardware investment?
SaaS
PaaS
IaaS
DBaaS
Explanation - PaaS provides an environment for rapid development and deployment, eliminating hardware investment needs.
Correct answer is: PaaS
Q.24 Which service model is most beneficial for startups wanting to avoid infrastructure costs?
SaaS
IaaS
PaaS
CaaS
Explanation - IaaS eliminates upfront infrastructure costs by providing virtualized servers and storage on-demand.
Correct answer is: IaaS
Q.25 Which service model offers ready-to-use software such as Office 365?
IaaS
PaaS
SaaS
CaaS
Explanation - Office 365 is SaaS since it delivers ready-made software accessible via the cloud.
Correct answer is: SaaS