What is cloud computing

## Multiple choice

What is the innovative characteristic of cloud computing?*

A- Scalability and pay-per-use pricing

B- Ability to operate on a single machine

C- Fixed, upfront costs

D- Hardware requirement for each application

A

T/F: Cloud computing enables users to only pay for the resources they actually use, which eliminates the need for upfront investments in infrastructure.*

true

Which of the following are benefits of cloud computing?*

A- Scalability

B- High maintenance costs

C- On-demand access

D- Fixed pricing models

A,C

What is virtualization?*

A- Creating multiple instances of an operating system on a single machine

B- A type of physical computing device

C- The process of outsourcing computing needs to a third party

D- A way of creating virtual worlds for gaming

A

T/F: Virtualization allows multiple virtual machines to coexist on the same physical hardware, providing isolation and customization for each user.*

true

Main types of computing models

A- Infrastructure-as-a-Service (IaaS)

B- Platform-as-a-Service (PaaS)

C- Software-as-a-Service (SaaS)

D- Database-as-a-Service (DBaaS)

A,B,C

Which of the following is an example of SaaS?*

A- Amazon EC2

B- Google AppEngine

C- Salesforce

D- Microsoft Azure

C

T/F: PaaS (Platform-as-a-Service) provides users with virtualized hardware and network resources.*

false

Which of the following are true benefits of cloud computing for developers?*

A- Developers can focus more on application logic than infrastructure

B- Developers must always manage physical hardware

C- Cloud services allow scaling applications dynamically

D- Developers pay for each server they manage manually

A,C

What does Web 2.0 enable for applications?*

A- Static websites with minimal interactivity

B- Enhanced user interactivity and user-generated content

C- Limited device access

D- Lack of dynamic content

B

T/F: Web 2.0 applications typically include features such as user-generated content, dynamic updates, and collaborative tools.*

true

Which of the following are characteristics of service-oriented computing (SOC)?*

A- Loosely coupled services

B- Platform-independent services

C- Highly centralized infrastructure

D- Reusable services

A,B,D

What is IaaS (Infrastructure-as-a-Service)?*

A- A model that provides hardware, storage, and networking resources on demand

B- A model offering software and applications on-demand

C- A model providing developers with a scalable runtime environment

D- A type of software that manages virtualized environments

A

T/F: IaaS allows users to only rent virtualized hardware resources and does not include software or platform services.*

true

Which of the following services are provided by Microsoft Azure?*

A- Virtual machine roles

B- Google AppEngine

C- Web roles for hosting applications

D- Caching services

A,C,D

Which of the following is an example of NoSQL?*

A- MySQL

B- MongoDB

C- PostgreSQL

D- Oracle

B

T/F: NoSQL databases are typically used for structured data and offer robust transaction management.*

false

Which of the following are advantages of cloud computing's pay-per-use model?*

A- Reduced upfront costs

B- Predictable pricing for all users

C- Scalable resource allocation

D- Users only pay for the resources they actually consume

A,C,D

What is the role of virtualization in cloud computing?*

A- It manages physical hardware directly

B- It enables the creation of isolated virtual environments on physical machines

C- It replaces the need for any hardware

D- It limits cloud computing resources

B

T/F: Grid computing was a predecessor to cloud computing, using distributed systems to share computational power over the internet.*

true

Which of the following cloud computing platforms are primarily categorized under PaaS?*

A- Google AppEngine

B- Amazon EC2

C- Force.com

D- Microsoft Azure

A,C