Describe Cloud Computing Flashcards
What is cloud computing?
Cloud computing is the delivery of computing services over the internet. Computing services include common IT infrastructure such as virtual machines, storage, databases, and networking. Cloud services also expand the traditional IT offerings to include things like Internet of Things (IoT), machine learning (ML), and artificial intelligence (AI).
It provides a way to rent compute power and storage from someone else’s data centre
What is Microsoft Azure?
Microsoft Azure is a public cloud computing platform—with solutions including Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). It can be used for services such as analytics, virtual computing, storage, networking, and much more. It can also be used to replace or supplement your on-premise servers.
List the benefits of cloud computing
1) It’s not constrained by your physical infrastructure
2) You only pay for the services you use
3) You can choose the power and features you need to run your software
4) The cloud provider manages the upkeep of the cloud computer so you don’t have to. They also ensure that there are backups, that the operating system is up-to-date, and make sure everything is up and running 24/7.
5) You can add or remove compute power as you need it
6) You can add or remove storage space as you need it
What are the basic services provided by all cloud providers?
Compute power and storage
What is compute power?
Compute power refers to how much processing your computer can do. This comprises the quantity of memory, the speed of the processors, and the number of processors. A computer’s processing speed and several simultaneous processes are both governed by its processing power.
It can be expressed in IPS (instructions per second), clock speed (Ghz) and in word or bus size (bits).
What is the definition of storage?
Storage is the volume of data you can store on your computer
What is the Shared Responsibility Model?
A model that shows who is responsible between the cloud provider and the consumer for maintaining the physical space, OS, applications, security, maintaining or replacing the servers, updating and patching software, and which are shared, based on the cloud service type.
List the 3 cloud service types
1) Infrastructure as a Service (IaaS)
2) Platform as a Service (PaaS)
3) Software as a Service (SaaS)
What is Infrastructure as a Service (IaaS)?
IaaS places the most responsibility on the consumer, with the cloud provider being responsible for the basics of physical security, power, and connectivity.
What is Software as a Service (SaaS)?
SaaS places most of the responsibility with the cloud provider
What is Platform as a Service (PaaS)?
PaaS, being a middle ground between IaaS and SaaS, rests somewhere in the middle and evenly distributes responsibility between the cloud provider and the consumer.
In the Shared Responsibility Model, which responsibilities are always retained by the customer?
1) Information and data
2) Devices (mobile and PCs)
3) Accounts and identities
In the Shared Responsibility Model, which responsibilities are always retained by the cloud provider?
1) Physical data centre
2) Physical network
3) Physical hosts
In the SaaS cloud service type, which responsibilities are the customers, which are the cloud providers, and which are shared?
1) Customer
Information and data
Devices (mobile and PCs)
Accounts and identities
2) Cloud provider
Physical data centre
Physical network
Physical hosts
Operating system
Network controls
Applications
3) Shared
Identity and directory infrastructure
In the PaaS cloud service type, which responsibilities are the customers, which are the cloud providers, and which are shared?
1) Customer
Information and data
Devices (mobile and PCs)
Accounts and identities
2) Cloud provider
Physical data centre
Physical network
Physical hosts
Operating system
3) Shared
Identity and directory infrastructure
Applications
Network controls
