4.1 – Cloud Computing: Cloud Models
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Questions and Answers

What is a private cloud?

  • A cloud built within a company’s own data center (correct)
  • A cloud service that is publicly accessible via the internet
  • A type of cloud service that only hosts backups
  • A cloud service shared by multiple organizations

What advantage does the cloud offer for resource management?

  • Resources must be allocated permanently regardless of demand
  • You can increase or decrease resources based on application load (correct)
  • You need to maintain physical servers at all times
  • Cloud resources cannot be customized for specific applications

How does a hybrid cloud deployment function?

  • It combines public cloud resources with on-premises private cloud resources (correct)
  • It only utilizes private cloud resources
  • It limits access to only international users
  • It restricts application instances to a single geographic location

What is one key benefit of using cloud services from providers like Amazon or Microsoft?

<p>You avoid the costs associated with maintaining your own data center (C)</p> Signup and view all the answers

What does deploying application instances worldwide enable organizations to do?

<p>Ensure performance by using the nearest data centers (B)</p> Signup and view all the answers

What does the term 'following the sun' refer to in cloud deployment?

<p>Moving application instances to the closest data centers as needed (A)</p> Signup and view all the answers

What can organizations do instead of utilizing third-party cloud services?

<p>Establish their own private cloud infrastructure (B)</p> Signup and view all the answers

What is a characteristic of application deployment in the cloud?

<p>Multiple components can be deployed collectively with ease (C)</p> Signup and view all the answers

What is the primary responsibility of the end user in an infrastructure as a service (IaaS) model?

<p>Implementing the operating system and middleware (A)</p> Signup and view all the answers

Which cloud deployment model allows organizations to share the costs of the infrastructure?

<p>Community deployment (D)</p> Signup and view all the answers

What does software as a service (SaaS) allow end users to avoid?

<p>Building their own applications (A)</p> Signup and view all the answers

What is typically provided by a platform as a service (PaaS) provider?

<p>Basic building blocks for application development (C)</p> Signup and view all the answers

How is infrastructure as a service (IaaS) sometimes referred to?

<p>Hardware as a service (HaaS) (B)</p> Signup and view all the answers

In a software as a service (SaaS) model, who is responsible for maintaining the application?

<p>The cloud provider (C)</p> Signup and view all the answers

What example illustrates the concept of SaaS?

<p>Using Google Mail for email services (C)</p> Signup and view all the answers

What aspect of a platform as a service (PaaS) model allows users to avoid extensive programming?

<p>Pre-built modules and components for assembly (D)</p> Signup and view all the answers

Which of the following is NOT a key responsibility of the end user in an IaaS model?

<p>Managing hardware upgrades (D)</p> Signup and view all the answers

What differentiates software as a service (SaaS) from platform as a service (PaaS)?

<p>PaaS requires the end user to develop applications (A)</p> Signup and view all the answers

Which deployment model would most likely involve a company managing their own application and data in their data center?

<p>On-premises model (A)</p> Signup and view all the answers

Why might organizations choose a community deployment for cloud services?

<p>To share the costs of infrastructure (C)</p> Signup and view all the answers

What aspect of data management is primarily the responsibility of the end user in an IaaS model?

<p>Data storage location decisions (D)</p> Signup and view all the answers

Which of the following statements is true about IaaS?

<p>It provides virtualized computing resources over the internet (A)</p> Signup and view all the answers

Flashcards

What is cloud computing?

Cloud computing refers to using remote servers and computing resources via the internet, rather than having them on-site.

What is a private cloud?

A private cloud is a cloud infrastructure managed within an organization's own data center, providing exclusive access and control.

What is a public cloud?

A public cloud is a cloud infrastructure that is shared with other organizations, often provided by third-party vendors.

What is a hybrid cloud?

A hybrid cloud combines private and public cloud resources, allowing organizations to leverage both internal control and external scalability.

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What does it mean to deploy an application in the cloud?

Deploying an application in the cloud means setting up and running its software components on remote servers, often with a single click.

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How can you scale applications in the cloud?

Scaling an application in the cloud involves dynamically adjusting the computing resources allocated to it based on demand.

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Where can cloud-based applications be deployed?

Cloud-based applications can run in data centers across the globe, offering users the most convenient and fastest access.

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How is cloud computing typically priced?

Cloud services are typically pay-as-you-go, meaning you only pay for the resources you use and can easily scale up or down based on your needs.

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Community Cloud

A cloud deployment model where organizations share the cost of cloud infrastructure, often for similar goals.

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Infrastructure as a Service (IaaS)

A cloud deployment model where the user only needs raw infrastructure (CPU, storage, network) to deploy their own applications. The cloud provider handles the hardware.

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Infrastructure as a Service (IaaS)

A cloud deployment model where the user only needs the hardware, and is fully responsible for everything else, like the operating system and application.

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Software as a Service (SaaS)

A cloud deployment model where the user only needs to access ready-made applications. The cloud provider manages everything, including application updates and data storage.

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Software as a Service (SaaS)

The user does not manage the application, operating system, or data storage. The cloud provider handles all of these aspects.

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Platform as a Service (PaaS)

A cloud deployment model that bridges the gap between IaaS and SaaS, providing a platform for developers to build and deploy custom applications on.

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On-premises model

A cloud deployment model where the user is responsible for managing all aspects of the application, including infrastructure, operating system, and application itself.

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Cloud Provider Responsibilities (IaaS)

The cloud provider is responsible for managing the network, storage, server, and virtualization platform.

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User Responsibilities (IaaS)

The user is responsible for managing the operating system, middleware, runtime data, application, and data.

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Cloud Provider Responsibilities (SaaS)

The cloud provider manages all aspects of the application, including the software, its updates, data storage, and security.

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User Responsibilities (SaaS)

The user only needs to access the application and does not manage any of its aspects.

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Platform as a Service (PaaS)

The cloud provider provides a platform with pre-built modules that developers can use to create custom applications.

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Study Notes

Cloud Computing Models

  • Cloud computing encompasses more than just offsite computing devices. It offers various capabilities, including the easy deployment of new applications.
  • Applications consist of multiple interconnected components (e.g., web servers, database servers, application servers). Cloud platforms enable deployment of all these components with a single action.
  • Global accessibility and scalability are key benefits. Applications can be deployed across multiple data centers worldwide, allowing users to access them from the nearest location. Resources and application instances can be adjusted based on demand (scaling up or down). This dynamic resizing saves costs by only paying for used resources.
  • Cloud deployments can be private, public, or hybrid.
    • Private clouds are solely accessible to one organization, hosted within their own data center.
    • Public clouds (like those from Amazon, Microsoft, and Rackspace) are shared resources accessible to multiple organizations.
    • Hybrid clouds combine private and public cloud deployments, leveraging both models.
    • Community clouds are shared among several organizations with a similar goal, sharing costs for private cloud infrastructure.

Cloud Deployment Models (IaaS, PaaS, SaaS)

  • Infrastructure as a Service (IaaS): Provides the raw computing infrastructure (servers, storage, networking). The user is responsible for the operating system, application, data, and other software.
    • Example: A company needing servers for a website, but handling website design and content themselves.
  • Platform as a Service (PaaS): Offers a platform for development and deployment of applications, providing building blocks (modules) instead of raw infrastructure.
    • Example: Salesforce.com, providing modules for building custom applications.
  • Software as a Service (SaaS): The cloud provider manages the entire application and data storage, making applications accessible via a web browser. Users don't need to install or manage the application.
    • Example: Google Mail and Microsoft 365.

Management Responsibilities

  • IaaS: End-users manage application, operating systems, data, and security. Providers handle hardware.
  • PaaS: End-users manage applications and data, providers offer the platform and handle security.
  • SaaS: Cloud provider manages all aspects of the application, storage, and application updates. End users only use it.

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Description

This quiz explores the various cloud computing models, including private, public, and hybrid clouds. You'll learn about the deployment of applications and the benefits of global accessibility and scalability. Test your understanding of how resources can be dynamically adjusted in cloud environments.

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