Week 6 - The Cloud Flashcards
What is cloud computing?
Cloud computing is the concept of having a large cluster of resources that can be used and shared by users in a better way
What line does hardware virtualization blur?
Hardware virtualization blurs the line between physical machines and virtual(logical) machines
Define what virtualization is/how that would look like
Virtualization is when you have a physical machine (host) available to run many virtual instances (guests)
Hosting many guests at your large dinner party
What is hypervisor?
software that runs and manages virtual machines and allows guests to use a virtual operating platform indistinguishable from physical hardware
Using a hypervisor, what can be accomplished with The Cloud and Virtualization if combined?
We can build a huge cluster of interconnected machines available to host a large number of virtual guests
How could a company save money and resources by using virtualization?
The company can just use virtualized servers to avoid unused resources, avoid multiple physical machines, and pay for what they need
What is a public cloud?
A public cloud is when a large cluster of machines are run by another company
What is a private cloud?
Private clouds are used by a single large corporation and physically hosted on its own premises
What is a hybrid cloud?
Hybrid cloud is for companies who:
- put sensitive data servers on a private cloud
- entrust less-sensitive servers to a public cloud
What is IaaS and what does it stand for?
Infrastructure as a Service
Concept that you shouldn’t have to worry about building your own network or servers, provided to you as a service
virtual machines, storage, networks, containers, etc
What does PaaS provide?
Platform as a Service
Provides customers access to a platform to run their services
What does SaaS provide?
Software as a Service
licenses the use of software to others while keeping that software centrally hosted and managed
