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1.0 Network+ Certification Cram Notes : Networking Fundamentals

1.8 Summarize cloud concepts and connectivity options

Cloud computing is a delivery model for IT resources and services over the internet, which enables businesses to consume computing resources like servers, storage, databases, and applications over the internet on an as-needed basis.

Connectivity options for cloud computing include:

1. Internet-based public cloud: Public clouds are owned and operated by third-party companies and are open for use by anyone.

2. Private cloud: Private clouds are dedicated to a single organization and offer higher levels of security and control compared to public clouds.

3. Hybrid cloud: A hybrid cloud combines elements of both private and public clouds to create a unique solution that fits the specific needs of the organization.

In addition, there are different types of cloud computing models, including infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). These models vary in terms of the level of management and control over the underlying infrastructure and the level of service provided to customers.

Explain the Deployment models

Deployment models refer to the different ways in which a cloud service can be deployed and made available to users.

1. Public Cloud: In a public cloud, resources are made available to the general public over the internet. The cloud provider owns and manages the infrastructure, and the service is provided on a shared basis to a large number of customers. Public clouds are generally less expensive and more scalable than private clouds, but may present security and privacy concerns.

2. Private Cloud: In a private cloud, the infrastructure is dedicated to a single organization and not shared with other users. Private clouds are typically more secure and offer more customization options than public clouds, but can be more expensive and less scalable.

3. Hybrid Cloud: A hybrid cloud is a combination of a public and private cloud, where some resources are maintained in-house and others are provided by a third-party cloud service provider. This allows organizations to take advantage of the benefits of both public and private clouds, depending on their needs.

4. Community Cloud: A community cloud is a shared infrastructure that is made available to a specific community of organizations with common needs. The infrastructure is owned and managed by one or more of the organizations, and is designed to meet the specific needs of the community. Community clouds are typically more secure and offer more customization options than public clouds, but can be more expensive and less scalable.

Explain the following Service models

The Service models are different ways in which organizations can consume cloud-based services to meet their computing needs.

1. Software as a Service (SaaS): SaaS is a model where organizations can access and use cloud-based software applications over the internet, without having to install or manage the underlying infrastructure. Examples of SaaS applications include customer relationship management (CRM), email, and office productivity tools.

2. Infrastructure as a Service (IaaS): IaaS is a model where organizations can access and use cloud-based computing infrastructure, such as virtualized servers, storage, and networking, without having to purchase and manage the underlying hardware. Examples of IaaS providers include Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform.

3. Platform as a Service (PaaS): PaaS is a model where organizations can develop, run, and manage their applications and services in the cloud, without having to worry about the underlying infrastructure. PaaS provides a development platform and tools, including application servers, databases, and middleware.

4. Desktop as a Service (DaaS): DaaS is a model where organizations can access a virtualized desktop environment in the cloud, providing employees with remote access to their desktop applications and data.


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