4.1 - Cloud Models

Question 1

What is a common misconception about the cloud?

Answer 1

The cloud is simply computing devices located off-site.

Question 2

What does the cloud encompass beyond off-site computing devices?

Answer 2

It includes capabilities such as deploying application instances and managing resources efficiently.

Question 3

What is an example of deploying an application in the cloud?

Answer 3

Deploying a web server, database server, and application server with one click.

Question 4

How can cloud resources be managed to handle varying workloads?

Answer 4

By deploying more application instances for increased load and removing them when the load decreases.

Question 5

How can cloud applications be optimized for users worldwide?

Answer 5

By deploying application instances in data centers around the world, following the sun for optimal access.

Question 6

What are the cost benefits of using cloud services?

Answer 6

You don’t need to buy your own equipment or maintain a data center, and you only pay for the resources you use.

Question 7

What is a private cloud?

Answer 7

A cloud infrastructure owned and used exclusively by a single organization.

Question 8

What is a public cloud?

Answer 8

A cloud infrastructure provided by companies like Amazon, Microsoft, or Rackspace, available to anyone in the world.

Question 9

What is a hybrid cloud?

Answer 9

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.

Question 10

What is a community cloud?

Answer 10

A cloud infrastructure shared by multiple organizations with similar goals, sharing the costs of the cloud.

Question 11

What is Infrastructure as a Service (IaaS)?

Answer 11

A cloud model where the provider offers CPU, storage, and network resources, and the user is responsible for the application and operating system.

Question 12

What is an example of IaaS?

Answer 12

A company that provides a server to host a website, with the user responsible for building and deploying the website content.

Question 13

What is Software as a Service (SaaS)?

Answer 13

A cloud model where the provider manages everything including the application, operating system, and storage, with no local installation required for the user.

Question 14

What is an example of SaaS?

Answer 14

Google Mail, where the user simply logs in and uses the email service without maintaining the application or storing the data.

Question 15

What is Platform as a Service (PaaS)?

Answer 15

A cloud model where the provider offers a platform with building blocks for the user to create and deploy applications.

Question 16

What is an example of PaaS?

Answer 16

Salesforce.com, which provides modules and tools to customize and deploy applications.

Question 17

What is an on-premises cloud model?

Answer 17

A model where all aspects, including hardware and software, are managed by the client within their own data center.

Question 18

In IaaS, what is the responsibility of the cloud provider?

Answer 18

Providing networking, storage, servers, and the virtualization platform.

Question 19

In SaaS, what does the cloud provider manage?

Answer 19

The application, operating system, networking, storage, servers, and all other aspects required for the application.

Question 20

In PaaS, what does the cloud provider offer?

Answer 20

Everything needed to build applications, with the user providing the application and data.

Question 21

What is the advantage of using a hybrid cloud deployment?

Answer 21

It allows organizations to use both private and public cloud resources for different parts of their application.

Question 22

What is the benefit of using a community cloud?

Answer 22

It allows multiple organizations to share cloud infrastructure costs while maintaining private access.

Question 23

What is the key difference between IaaS and SaaS?

Answer 23

In IaaS, the user is responsible for the application and operating system, while in SaaS, the provider manages everything.

Question 24

What is the primary role of the user in a PaaS model?

Answer 24

To use the provided platform and tools to build and deploy their own applications.

Question 25

Why might an organization choose an on-premises cloud model?

Answer 25

To have full control and security over their infrastructure and applications.