Cloud Computing correct answerRemote virtual pool of on-demand shared resources offering compute, storage, database, and Network services that can be rapidly deployed at scale.
Virtualization correct answerAllows the
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Cloud Computing correct answerRemote virtual pool of on-demand shared resources offering compute, storage, database, and Network services that can be rapidly deployed at scale.
Virtualization correct answerAllows the possibility of having multiple virtual machines each running on separate operating systems and applications, installed on 1 physical server.
Hypervisor correct answerIs a piece of software used to create the virtualized environment allowing for multiple VMS to be installed on the same host.
What are the benefits of Cloud Computing? (7 Total) correct answer-Reduced capital expenditure
-Less hardware required
-Reduced operating costs
-Less space, power, and cooling (air conditioning)
-Smaller footprint
-Optimization of resources
-Handled by Cloud vendor & consumer
What are the three cloud deployment models? correct answerPublic, Private, and Hybrid
Public - Cloud Deployment Model correct answerA vendor makes available the use of shared infrastructure:
-Storage
-Network
-Database
-Compute
-Consumers can specifically choose the geographic region in which it resides to aid with data access latency based on where the end users are located.
-However - they will never see (physically) where their data sits.
Private - Cloud Deployment Model correct answerThe cloud can only be accessed, hosted, and managed by the individual. company using it.
-Direct control of all data.
-To maintain for tight security reasons
-Hardware is held on-premise - wherever that company is located.
-More capital expenditure is required to host the datacenter
-As well as day-to-day operations needed to maintain equipment.
-Cooling
-Maintenance
-Space
Hybrid - Cloud Deployment Model correct answer-Both public + private
-Can be used for seasonal burst traffic
-Or for Disaster Recovery
-Usually for short-term configurations and can often be used for transitional states for enterprises.
On-Demand Resourcing correct answer-When you want to provision a resource within the cloud, it's almost immediately available to allocate where/when you need it.
-No waiting for cables to be ordered, installed, or configured
Scalability correct answerCloud computing offers you the ability to rapidly scale your environments/ resources to move up/down or in/out.
Scaling up/down alters the power/performance of the virtual machines
For example) CPU/Memory Power
Scaling in/out is adding/removing virtual machines in resources.
Utility Based Metering correct answerOnly pay for what you use.
-2 hours of running instance = 2 hours worth of resources
-This data gets replicated as well in different regions for backup/storage.
Why are cloud vendors more secure than (physical) data centers? (2 main reasons) correct answer-Must comply to global compliance programs across multiple industries
-Shared responsibility model - holds everyone accountable.
What are the three cloud service models? correct answerSaas (Software as a Service), Paas (Platform as a Service), and Iaas (Infrastructure as Service).
Saas correct answerAllows for the delivery and application that can be widely distributed and accessed.
-For example - Gmail
-Fully managed/accessed over the internet.
-No requirements to install any software on your local device.
-Usually very simple in design focusing on ease - to appeal to a wider audience.
Paas correct answerPaaS providers give a greater level of management and control.
-Access to a framework from the operating system and up.
-Architecture, host hardware, network components and OS are typically managed by the vendor.
-Makes for a great deployment service for developers.
-Provides you the operating system for editing/applying within the service.
Iaas correct answerHighest level of customization and management
Allows you to architect your own portion of the cloud, by configuring a virtual network.
-These are segmented from other networks allowing you to deploy any resources you need.
-Can configure instances (virtual machines) from any operating system.
The underlying host however still manages:
-Maintenance
-Security
What are the Use Cases
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