Computing

Question 1

What are the three benefits of cloud computing?

Answer 1

Accessible on demand
It is elastic - easy to increase/decrease storage or add more processing power
Price - it is cheap and pay only for what you use, dont need to by any hardware
There are well defined APIs

Question 2

What are the common cloud services?

Answer 2

• Infrastructure as a service (IaaS) i.e. Amazon Web Services. The most basic of cloud computing services. With IaaS you rent the IT infrastructure - servers and virtual machines (VMs), storage, networks, operating systems.
• Platform as a service (PaaS) mainly business services such as facebook. Refers to cloud computing that supplies an on demand enviroment for developing, testing, delivering and managing software applications. PaaS is designed to make it easier for developers for to quickly create web or mobile apps, without worrying about setting up or managing the underlying infrastructure of servers, storage, network and databases needed for development.
• Software as a service (SaaS) i.e. Gmail. SaaS is a method for delivering software applications over the internet, on demand and typically on a subscription basis. With SaaS cloud providers host and manages the software application and the underlying infastructure and handle any maintenance. Users connect to the application over the internet usually with a web browser.

Question 3

What are the three types of cloud computing infrastructure?

Answer 3

Public - Public clouds are owned and operated by a third party cloud service provider which delivers computing resources such as servers and storage over the internet.

Private - Cloud infrastructure within an organisations
firewall, used exclusively by a single business or organisation. A private cloud can be physically located on the companys on-site data centre.

Hybrid - bit of both. Hybrid clouds combine both public and private clouds, bound together by technology that allows data and data applications to be shared between them.

Question 4

What kind of services are part of IaaS services (e.g. Amazon web service)

Answer 4

Cloud compute
Storage
Hosting databases

Question 5

What is cyber security?

Answer 5

Cyber security comprises technologies, processes and controls that are designed to protect systems and networks from cyber attacks.

Effective cyber security reduces the risk of cyber attacks and protects organisations and individuals from unauthorised exploitation of systems, networks and technologies.