Virtualization

Question 1

What is virtualization?

Answer 1

Virtualization creates a virtual layer over the hardware using the hypervisor software, which manages resources assigned to the virtual machines

Question 2

What is a virtual machine?

Answer 2

A virtual machine is a virtual presentation of a physical system (hardware device)

Question 3

Virtual machines are referred to as ________ whereas the physical system they run on is referred to as ________

Answer 3

Guest, host

Question 4

What is a hypervisor?

Answer 4

Its a software that manages virtual machines (VM) & acts as an interface between VM & physical hardware to ensure proper access to the resources needed for working

Question 5

What are the different types of hypervisors?

Answer 5

1. Type 1/ Bar metal hypervisor
2. Type 2 hypervisor

Question 6

What is type 1/ bar metal hypervisor?

Answer 6

Directly interacts with the hardware system & user resources (direct middleman)

Question 7

What is type 2 hypervisor?

Answer 7

Works as an application in the host OS & manages the resources to the virtual machines (VM)

Question 8

What are the different types of virtualization?

Answer 8

• Desktop virtualization
• Network virtualization
  -Storage virtualization
  -Application virtualization

Question 9

What is desktop virtualization?

Answer 9

It allows us to run multiple desktop OS in each VM

Question 10

What are the different types of desktop virtualization?

Answer 10

• Virtual desktop infrastructure (VDI)
• Local desktop virtualization

Question 11

What is virtual desktop infrastructure?

Answer 11

Its a virtualization solution that uses virtual machines to provide & manage virtual desktops

Question 12

What is local desktop virtualization?

Answer 12

The OS runs on hardware virtualization & all processing & workload

Question 13

What is network virtualization? (NV)

Answer 13

Can combine multiple physical networks into one virtual software-based network or it can divide one physical network into separate, independent virtual networks

Question 14

What are the different types of Network virtualization?

Answer 14

-Software-defined networking (SDN)

• Network function virtualization (NFV)

Question 15

What is software-defined networking (SDN)

Answer 15

Virtualizes the hardware that controls the network trafficking

Question 16

What is network function virtualization (NFV)?

Answer 16

Virtualizes the hardware components that provide network specific function, easier to configure & manage (ex. firewall)

Question 17

What is storage virtualization?

Answer 17

Uses all the storage devices on the system to be accessed & be managed as a single storage unit where the storage is put into a shared pool from which they can be allocated to any VM on the system

Question 18

What is application virtualization?

Answer 18

Application virtualization runs software applications without installing them directly into host OS

Question 19

What are the different types of application virtualization?

Answer 19

• Local application virtualization
• Application virtualization
• Server based application virtualization

Question 20

What is local application virtualization?

Answer 20

Runs on the hardware of the host device but runs on a different virtual environment

Question 21

What is application virtualization?

Answer 21

Application is on the sever side & in some of the components of the host device according to the requirements

Question 22

What is server based application virtualization?

Answer 22

Runs directly on the sever side & only the interfaces to the direct system

Question 23

What are some benefits of virtualization?

Answer 23

1. Resources management
2. Minimum downtime
3. Time management

Question 24

What is an operating system (OS)?

Answer 24

Are just programs that run & manage other programs (usually the 1st to start when a computer is turned on & then everything else starts running)

• Most common OS for desktops is MacOS & Window