4.1 - Cloud Models Flashcards
What is a common misconception about the cloud?
The cloud is simply computing devices located off-site.
What does the cloud encompass beyond off-site computing devices?
It includes capabilities such as deploying application instances and managing resources efficiently.
What is an example of deploying an application in the cloud?
Deploying a web server, database server, and application server with one click.
How can cloud resources be managed to handle varying workloads?
By deploying more application instances for increased load and removing them when the load decreases.
How can cloud applications be optimized for users worldwide?
By deploying application instances in data centers around the world, following the sun for optimal access.
What are the cost benefits of using cloud services?
You don’t need to buy your own equipment or maintain a data center, and you only pay for the resources you use.
What is a private cloud?
A cloud infrastructure owned and used exclusively by a single organization.
What is a public cloud?
A cloud infrastructure provided by companies like Amazon, Microsoft, or Rackspace, available to anyone in the world.
What is a hybrid cloud?
A combination of private and public cloud services where part of the application is hosted on a private cloud and part on a public cloud.
What is a community cloud?
A cloud infrastructure shared by multiple organizations with similar goals, sharing the costs of the cloud.
What is Infrastructure as a Service (IaaS)?
A cloud model where the provider offers CPU, storage, and network resources, and the user is responsible for the application and operating system.
What is an example of IaaS?
A company that provides a server to host a website, with the user responsible for building and deploying the website content.
What is Software as a Service (SaaS)?
A cloud model where the provider manages everything including the application, operating system, and storage, with no local installation required for the user.
What is an example of SaaS?
Google Mail, where the user simply logs in and uses the email service without maintaining the application or storing the data.
What is Platform as a Service (PaaS)?
A cloud model where the provider offers a platform with building blocks for the user to create and deploy applications.
What is an example of PaaS?
Salesforce.com, which provides modules and tools to customize and deploy applications.
What is an on-premises cloud model?
A model where all aspects, including hardware and software, are managed by the client within their own data center.
In IaaS, what is the responsibility of the cloud provider?
Providing networking, storage, servers, and the virtualization platform.
In SaaS, what does the cloud provider manage?
The application, operating system, networking, storage, servers, and all other aspects required for the application.
In PaaS, what does the cloud provider offer?
Everything needed to build applications, with the user providing the application and data.
What is the advantage of using a hybrid cloud deployment?
It allows organizations to use both private and public cloud resources for different parts of their application.
What is the benefit of using a community cloud?
It allows multiple organizations to share cloud infrastructure costs while maintaining private access.
What is the key difference between IaaS and SaaS?
In IaaS, the user is responsible for the application and operating system, while in SaaS, the provider manages everything.
What is the primary role of the user in a PaaS model?
To use the provided platform and tools to build and deploy their own applications.
Why might an organization choose an on-premises cloud model?
To have full control and security over their infrastructure and applications.
