Cloud Service Models

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Questions and Answers

What is the primary benefit of using cloud services?

  • Having to purchase and maintain servers
  • Letting someone else handle tasks that are not core to the business (correct)
  • Having to manage scalability and maintenance
  • Having full control over hardware and software

What is an example of an application that can be delivered by a cloud service provider?

  • Custom-built software application (correct)
  • Networking gear
  • Operating System
  • Virtualization software

What is the role of the customer in a cloud service?

  • To manage and maintain the servers
  • To purchase and maintain the hardware
  • To handle scalability and upgrades
  • To use the application or software (correct)

What is the primary responsibility of a cloud service provider?

<p>To manage and maintain the infrastructure (B)</p> Signup and view all the answers

What is the result of using a cloud service provider?

<p>Reduced need for on-prem infrastructure (A)</p> Signup and view all the answers

What is the advantage of using a cloud service provider in terms of scalability?

<p>The service provider has to handle scalability (A)</p> Signup and view all the answers

What is an example of on-prem infrastructure?

<p>Four rack servers with virtualization software (A)</p> Signup and view all the answers

What is the name of the virtualization software running on the servers in the video?

<p>ESXi (B)</p> Signup and view all the answers

What is the primary function of the server labeled 'Management' in the Las Vegas data center?

<p>To manage the ESXi hosts as a group (D)</p> Signup and view all the answers

What is the role of the ESXi software in the infrastructure setup?

<p>To create and manage virtual machines on the physical hardware (D)</p> Signup and view all the answers

What is the benefit of using a service provider for virtual machines?

<p>To have the functionality of virtual machines without managing the underlying infrastructure (B)</p> Signup and view all the answers

What is responsible for providing the operating system on the virtual machines?

<p>The virtual machine itself (D)</p> Signup and view all the answers

What is the term used to describe doing everything in-house, on-premises?

<p>On-prem (C)</p> Signup and view all the answers

What is the purpose of the vCSA virtual machine?

<p>To manage the ESXi hosts as a group (A)</p> Signup and view all the answers

What is the responsibility of the client when using a service provider for virtual machines?

<p>To manage the applications and data on the virtual machines (B)</p> Signup and view all the answers

What is the main difference between doing everything in-house and using a service provider?

<p>Who is responsible for managing the underlying infrastructure (B)</p> Signup and view all the answers

What is the term used to describe the components that make up the underlying infrastructure?

<p>Infrastructure stack (A)</p> Signup and view all the answers

What is the main benefit of using virtualization software?

<p>To create and manage multiple virtual machines on a single physical host (B)</p> Signup and view all the answers

What is the primary advantage of using desktop-as-a-service?

<p>Flexibility to spin up virtual machines on demand (B)</p> Signup and view all the answers

What does the 'X' in XaaS represent?

<p>anything (C)</p> Signup and view all the answers

Which of the following is NOT an example of XaaS?

<p>Hardware-as-a-Product (D)</p> Signup and view all the answers

What happens to the state of a virtual machine when it is no longer needed?

<p>It is saved and can be reused later (D)</p> Signup and view all the answers

What is the term for delivering desktops as virtual machines that can be remotely accessed?

<p>Desktop-as-a-Service (A)</p> Signup and view all the answers

Which of the following is a characteristic of cloud services?

<p>On-demand self-service (D)</p> Signup and view all the answers

What is the primary benefit of using infrastructure-as-a-service?

<p>It allows customers to rent virtual machines and be responsible for applications and data (C)</p> Signup and view all the answers

What is the key difference between infrastructure-as-a-service and platform-as-a-service?

<p>Infrastructure-as-a-service provides virtual machines, while platform-as-a-service provides a complete development environment (A)</p> Signup and view all the answers

What is the primary responsibility of the service provider in a software-as-a-service model?

<p>To manage and maintain the application or software provided to the customer (B)</p> Signup and view all the answers

What is the trend observed in the different cloud service models?

<p>The service provider takes more responsibility, and the customer takes less responsibility (A)</p> Signup and view all the answers

What is the primary benefit of using platform-as-a-service?

<p>It provides a complete development environment with no customer responsibility for individual VMs or operating systems (D)</p> Signup and view all the answers

What is the key difference between on-prem and infrastructure-as-a-service?

<p>On-prem requires customer responsibility for all components, while infrastructure-as-a-service requires less customer responsibility (B)</p> Signup and view all the answers

What is an example of a software-as-a-service application?

<p>Salesforce or Slack, where the customer does not host the server (A)</p> Signup and view all the answers

What is the primary responsibility of the customer in a platform-as-a-service model?

<p>To manage and maintain the development environment and applications (B)</p> Signup and view all the answers

What is the key benefit of using software-as-a-service?

<p>It provides a software application with no customer responsibility for data, maintenance, or hosting (A)</p> Signup and view all the answers

What is the primary difference between platform-as-a-service and software-as-a-service?

<p>Platform-as-a-service provides a development environment, while software-as-a-service provides a complete software application (B)</p> Signup and view all the answers

In infrastructure-as-a-service, who is responsible for managing the operating system and supporting software?

<p>The customer (D)</p> Signup and view all the answers

What is a benefit of using software-as-a-service?

<p>The customer can focus on using the application or service without worrying about the infrastructure (A)</p> Signup and view all the answers

What is an example of a platform-as-a-service?

<p>AWS Elastic Beanstalk (D)</p> Signup and view all the answers

What is a drawback of using software-as-a-service?

<p>The customer loses some control over the infrastructure and application (B)</p> Signup and view all the answers

What is function-as-a-service?

<p>A service where the customer submits executable code to be executed by the service provider (D)</p> Signup and view all the answers

What is an advantage of using infrastructure-as-a-service?

<p>The customer has full control over the infrastructure and application (B)</p> Signup and view all the answers

What is an example of a software-as-a-service?

<p>Salesforce (B)</p> Signup and view all the answers

What is desktop-as-a-service?

<p>A service where the customer can use virtualized desktops provided by the service provider (A)</p> Signup and view all the answers

What is a benefit of using platform-as-a-service?

<p>The customer can focus on deploying and managing applications without worrying about the underlying infrastructure (A)</p> Signup and view all the answers

What is a key difference between infrastructure-as-a-service and software-as-a-service?

<p>The customer manages the operating system and supporting software in infrastructure-as-a-service, but not in software-as-a-service (C)</p> Signup and view all the answers

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Study Notes

Cloud Service Models

  • Cloud services provide a range of benefits, including someone else taking care of tasks that we don't want to or can't do ourselves, such as hosting software applications.
  • In an on-prem setup, we would need to manage physical servers, networking, storage, virtualization, operating systems, and applications ourselves.

Infrastructure-as-a-Service (IaaS)

  • Provides virtual machines (VMs) that customers can configure and manage as needed
  • Customers are responsible for the operating system, supporting software, data, and applications running on the VMs
  • Service provider is responsible for the physical servers, storage, and virtualization
  • Example: A software development company rents VMs and configures them to create a development environment

Platform-as-a-Service (PaaS)

  • Provides a platform for developers to create code without worrying about individual VMs or infrastructure
  • Customers are responsible for the applications and data, but not the operating systems or servers
  • Service provider is responsible for the platform, operating systems, and infrastructure
  • Example: AWS Elastic Beanstalk, which supports various development environments and languages

Software-as-a-Service (SaaS)

  • Provides software applications over the internet, eliminating the need for customers to host or manage them
  • Service provider is responsible for the entire application, including maintenance, updates, and security
  • Customers simply log in and use the application
  • Examples: Salesforce, Slack, Google Docs, and Gmail

Other Service Types

  • Function-as-a-Service (FaaS): customers submit code to be executed, and the service provider runs it in the background
  • Desktop-as-a-Service (DaaS): virtual machines are provided as desktops, which can be spun up and down as needed
  • XaaS (Anything-as-a-Service): any service that can be delivered and consumed by a customer, such as Networking-as-a-Service or Storage-as-a-Service

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