Cloud Computing

¿Cuanto sabes/n de Cloud Computing?

• Nada

• Poco

• Mucho

• Muchísimo

What terms from the list below would be viewed as benefits of using cloud services?

• Elasticity

• Un-predictable costs

• Local reach only

• Agility

• Economies of scale

Answer explanation

Elasticity, Agility and Economies of scale are the correct answers, and would be seen as benefits that you can gain from using cloud services. All other answers are incorrect. Un-predictable costs and local reach only would not be benefits of using cloud services because cloud services does provide predictable costs and global reach.

When looking at using a cloud service, what expenditure type are cloud services based on?

• Capital Expenditure (CapEx)

• Friendly expenditure

• Maximum expense

• Operational Expenditure (OpEx)

Answer explanation

Operational Expenditure (OpEx) is the correct answer. Cloud services operate on an Operational Expenditure model. It is regular, repeated expenditure that you pay for using cloud services. Capital Expenditure (CapEx) is not the correct answer. Capital Expenditure (CapEx) is not required to be paid upfront when looking to start using a cloud services. There are no up front costs to use cloud services. You pay for what you consume, under a consumption based model. Friendly expenditure and Maximum expense are not defined expenditure types.

Which of the following terms relate to making a service available with no downtime for an extended period of time?

• Performance

• High Availability

• Fault Tolerance

• Agility

Answer explanation

High Availability is the correct answer. The other answers, while they may be related, are not correct. Performance is the ability to provide quick and efficient response times to requests. Fault Tolerance is the ability to survive a failure of a component. Agility is the ability to react quickly.

Which cloud models provide services that can be accessed by the public?

• Public

• Private

• Hybrid

• Global

Answer explanation

Public and Hybrid cloud models use services that can be accessed by the public. Hybrid cloud has a public and private element, hence the public part is accessible by the public. Private cloud models is run and owned by an organization for use exclusively for that organization and access is not provided to the public. It may be made available to other 3rd parties depending on the business requirements. Global is not a valid cloud model.

Which cloud model provides the greatest degree of ownership and control?

• Public

• Private

• Hybrid

Answer explanation

Private cloud models is the correct answer. Both public and hybrid clouds have an infrastructure that is managed by another party. As such, there is less control over the infrastructure.

Which cloud model provides the greatest degree of flexibility?

• Public

• Private

• Hybrid

Answer explanation

Hybrid cloud model provides the greatest degree of flexibility, as you have the option to choose either public or private depending on your requirements. Public cloud means you will not have full ownership over all aspects of the service. Private cloud means there is upfront costs associated with creating, managing and maintaining your private cloud.

You are running a virtual machine in a public cloud using IaaS. Which model correctly reflects how that resource is managed?

• user management model

• cloud user management model

• no responsibility management model

• shared responsibility model

Answer explanation

The shared responsibility model is the correct answer. Under the shared responsibility model, management of the resource is shared between the cloud provider and the end user. The cloud provider being responsible for the cloud services infrastructure and the end user being responsible for the service being configured and managed correctly. The user management model, cloud user management model and no responsibility management model are not valid defined management models.

Which term best describes PaaS?

• Users can create and deploy an application as quickly as possible without having to worry about managing the underlying infrastructure

• Users are responsible for purchasing, installing, configuring, and managing their own software—operating systems, middleware, and applications

• Users pay an annual or monthly subscription

Answer explanation

The correct answer is that the users can create and deploy an application as quickly as possible without having to worry about managing the underlying infrastructure Users are responsible for purchasing, installing, configuring, and managing their own software—operating systems, middleware, and applicationsapplies to IaaS. Users pay an annual or monthly subscriptionis applicable to SaaS services.

You have two types of applications which you need to run: legacy applications that require specialized mainframe hardware and newer applications that can run on commodity hardware. Which cloud deployment model would be best for you?

• Public Cloud

• Private Cloud

• Hybrid Cloud

• On-Premise

Answer explanation

Hybrid cloud is the correct answer. A hybrid cloud is a public and private cloud combined. You can run your new applications on commodity hardware you rent from the public cloud and maintain your specialized mainframe hardware on-premises