Virtualization and cloud Flashcards
What is a hypervisor?
An application that can create a second guest OS within a host computer. This app can also be used to manage virtual machines and connect them together.
What’s the difference between virtualization and emulation
Virtualization can only process what the host system is already capable of. Emulation translates the commands of one platform into another and has a lot of overhead.
What bios option can enable virtualisation support
SVM - Secure virtual machine
What are two names for a saved state of a virtual machine?
Snapshot / Checkpoint
Explain type 1 and 2 hypervisors
Type 1 is bare metal. It has no host OS, only the hypervisor and the hardware. Type 2 works through a host OS.
What does the bridge virtual network type do?
Piggy-backs off of the host system’s NIC and runs its network operations through it exclusively
What does the internal network network option do?
Allows VMs to connect to one another, but not to the outside world. A local LAN.
What does NAT entail in a Vm setting for network options
A virtual router that acts the same as “internal network” but treats the host system like an ISP, running an internet connection to it.
What is IaaS
A basic server with an OS and minimum tools. No maintenance, no administration.
What is PaaS
Platform as a service provides infrastructure and support for said infrastructure without any effort on your part.
SaaS?
Software as a service - Applications such as google maps and “web applications” which is arguably every page on the internet.
What is a public cloud
Usable by anyone. Dropbox, etc.
Private cloud?
Business or individual use only
Community cloud?
Used by numerous businesses or multiple individuals, but not publicly accessible.
