Understanding Cloud Concepts Flashcards
What is scalability?
Scalability is the ability to increase/decrease the amount of resources needed for your operations based on workload at anytime.
Vertical Scaling vs. Horizontal Scaling
What is elasticity?
Elasticity is the immediate on-demand resource addition based on the immediate need for a specific month.
What is agility?
Agility is the ability to rapidly change IT infrastructure to adapt to the evolving needs of the business.
What is fault tolerance?
Fault tolerance is the ability to design server clustering, redundant power supples, and uninterruptible power supples to meet demands just in cause a server needs to be replaced.
What is disaster recovery?
disaster recovery is something that needs to be planned for; a plan for disasters that includes a backup generator and data recovery site.
What is the principle of economies of scale?
Economies of scale is the idea that if you have a larger IT infrastructure the unit cost for operational and capital expenses will be cheaper for you than if you were a smaller datacenter.
What is the difference between CapEx and OpEx?
Capital expenditures include payments for physical infrastructures to support your applications. These cap expenses include server costs, network costs, backup & archive costs, datacenter infrastructure costs and technical personnel costs.
Operational Expense- is what you pay for solely when you switch to a cloud platform; these include utilities expenses that you pay for using ‘their datacenters.’
What is the consumption based model?
A pay-as-you-go model that is that you pay for only what you consume in terms of compute storage, networking, resources, etc.
What is IaaS?
IaaS is also called Infrastructure as a Service. It gives the basic infrastructure of cloud computing in virtual environment (VMs). Example products of IaaS include AWS EC2, Go-Grid, & Rackspace.
What is PaaS?
PaaS is also called Platform as a service. This is considered the domain for developers. These platforms include AWS-elastic beanstalk, Google app engine, Azure Huroko.
What is SaaS?
These are usually just leased subscriptions for an already built cloud application used by a client. This includes Microsoft 365 and Google Drive.
What is public cloud model?
Public cloud model is a model that is given over the internet. The public cloud model has storage in datacenters supported by Azure system administrator off-premise and the storage of data is not known by the client.
What is the private cloud model?
on-premise or managed by a cloud provider off-site with data storage well-known to the client and administrator.
Data storage for private cloud model is the AZURE STACK./
What is the hybrid cloud model?
a mix between public cloud and private cloud model.
- This model is used in 3 instances:
1. ) Cloud Bursting
- ) Segmenting Approach
- ) Migration Approach
