Module 2 - Archives, Virtual Machines and The Cloud Flashcards
Archives
also mean a collection of data and settings. Something like a compressed folder full of files can become a .zip archive.
Different archive or Compression extensions
-ZIP or Zicxac Inline Pin
-RAR or Roshal Archive
-TAR or Tape Archive
-ISO
-7Z Archive
Virtualisation
allows an operating system to run on top of another operating system or directly on top of specialised hardware.
To have isolated and stable environment Testing, debugging )VMware and Virtual box)
What is the cloud?
are servers (and services) that run on remote hardware platforms, with built-in scaling and redundancy. Cloud servers form the backbone of what we consider the Internet to be today. Cloud servers are also called Infrastructure as a Service (IaaS) systems.
Two types of cloud servers
-Logical servers
-Physical (or dedicated) cloud servers
Logical servers
are delivered through server virtualisation.
Physical (or dedicated) cloud servers
are also remotely accessed through the Internet, but they are not shared or distributed across hardware.
Benefits of having a cloud in a company
-cost
-scalability
-security
-uptime.
SaaS
Servers as a Service
allows users to connect to and use cloud-based apps over the Internet. Common examples are email, calendaring, and office tools (such as Microsoft Office 365).
IaaS
Infrastructure as a Service
is a cloud service model that offers on-demand infrastructure resources, such as compute, storage, networking, and virtualization, to businesses and individuals via the cloud.
PaaS
Platform as a Service
is a complete development and deployment environment in the cloud, with resources that enable you to deliver everything from simple cloud-based apps to sophisticated, cloud-enabled enterprise applications.
