2.1 Cloud and Cloud Services

Question 1

CLOUD

Answer 1

In general, when we talk about the cloud, we re talking about three things:

DATA CENTERS
CLOUD COMPUTING or CLOUD SERVICES
VIRTUALIZATION

Question 2

PUBLIC CLOUD

Answer 2

Offer services and applications to the general population.
The public cloud uses the internet to provide services.

Question 3

PRIVATE CLOUD

Answer 3

Are intended for specific organizations or entities like governments, and are only accessed by those private organizations.
A private cloud can be set up using the private network of an organization, though this can be expensive to build and maintain. A private cloud can also be managed by an outside organization with strict access security.

Question 4

HYBRID CLOUD

Answer 4

A hybrid cloud is made up of two or more clouds, where each part remains a separate object, but both are connected using a single architecture.
Individuals on a hybrid cloud would be able to have degrees of access to various services based on user access rights.

Question 5

COMMUNITY CLOUD

Answer 5

A community cloud is created for exclusive use by a specific community.
The differences between public clouds and community clouds are the functional needs that have been customized for the community.

Question 6

SaaS

Answer 6

Software as a Service
Refers to an on demand software or a subscription model where the license and delivery of the software happens through the cloud.

Question 7

PaaS

Answer 7

Platform as a Service
Is where the cloud service provider provides the platform for the developer to develop an application or app.

Question 8

IaaS

Answer 8

Infrastructure as a servide refers to virtual computing that can be provided over the internet on demand.

Question 9

VIRTUALIZATION

Answer 9

Is the ability to abstract or separate the operating system from the physical hardware.

Question 10

HYPERVISOR

Answer 10

To create a virtual computer the dedicated physical hardware needs to be shared with the virtual computer.

Question 11

TYPE 1 HYPERVISOR

Answer 11

BARE METAL HYPERVISOR
Is a virtualization server.
The hypervisor is an operating system that’s installed directly onto the hardware.
After which virtual computers can be created.

Question 12

TYPE 2 HYPERVISOR

Answer 12

HOSTED HYPERVISOR
The hypervisor is an application or program that is installed on top of the host operating system.