4.1 Compare and contrast cloud computing concepts. Flashcards
___ can be thought of as a virtual data center. You may see this sometimes referred to as hardware as a service.
Infrastructure-as-a-Service (IaaS)
____ provides a space for developers to build their own applications.
Platform-as-a-Service (PaaS)
___ can be described as any program that is accessed via the Web and not locally installed.
Software-as-a-Service (SaaS)
In an ___ environment, clients are entirely responsible for managing, maintaining, and patching operating systems and applications.
IaaS
Examples of ___ providers include DigitalOcean® and Rackspace®.
IaaS
Examples of ___ providers include Google Apps® and Dropbox®.
SaaS
What is the advantage of SaaS?
It allows organizations to access their programs anywhere an Internet connection is available.
Examples of ___ providers include Google App Engine® and AWS Elastic Beanstalk®.
PaaS
Items such as servers, firewalls, routers, and switches provided by the cloud would be included with what kind of cloud infrastructure?
IaaS
The ___ cloud refers to anything that is delivered across the open Internet.
public
A ___ cloud is a shared cloud being used by multiple organizations.
community
___ clouds are the most secure cloud option, but they come at a high price, they give organizations flexibility while ensuring that they still have 100% ownership of their data and infrastructure.
Private
Private, community, and public clouds can be combined to create a ___ cloud.
hybrid
The client is responsible for security, maintenance, applications, and operating systems in what cloud model?
IaaS
One common implementation of ___ is a web hosting provider. You purchase the hardware from that web hosting provider. But you’re responsible for installing the web hosting software and maintaining all of your websites.
IaaS
Sometimes referred to as on-demand software. You log into a website and you immediately have access to the software.
SaaS
Payroll services, google docs, Gmail are examples of what?
SaaS
In this model, you want to maintain control of your software environment, but you don’t want to maintain any equipment.
IaaS
Who manages data and applications in SaaS, PaaS, and IaaS respectively?
SaaS- the provider manages both
PaaS- the client manages both
IaaS- the client manages both
With ___ cloud services, there can be a cost for almost anything you would do on that service. If you upload a file, there’s a cost. If you download a file, there’s a cost associated with that.
metered
A metered service differs from a measured service because..
rather than being interested in how long your Web application has been running or some other service measurement, they base the pricing off of the amount of processing resources you require.
When purchasing services from a cloud provider, you may be billed based on Web traffic or uptime. This type of billing process is known as a ___ service.
measured
___ is the concept of combining the resources of physical servers and making them available in a single pool. It allows customers to use and pay for only the resources they need from at a given time.
Resource pooling
Instant resource provisioning is known as…
on-demand self service
