Virtualization and Cloud Computing

Question 1

4 important things when it comes to Virtualization:

Answer 1

The Computer
Hypervisor - manager like software that sits between the hardware and actual virtual machine ex: VMware, ESXi, Virtual Box, Microsoft Hyper-V
Virtual Machine
Virtual Hard disk ( VHD or VHDx ) - or file

Question 2

There are 2 hypervisors

Answer 2

Type 2 or hosted- runs on top of your computers OS, allows you to switch between the OS and virtual machine
Type 1 or bare metal - Boots up your virtual machine

Question 3

Saving power consumption, hardware consolidation, and system recovery are all benefits of _______________?

Answer 3

Virtualization

Question 4

Virtual machines need a _________ _________.

Answer 4

operating system

Question 5

To be able to upsize or downsize the memory and storage of a virtual machine without the added investment of more on-site hardware by utilizing the clouds resources is called:

Answer 5

Scalability

Question 6

To be able to increase or decrease resources of your VM based on the demand of your application, service is called:

Answer 6

Elasticity

Question 7

The availability to support multiple customers on the same device, service, or infrastructure all at once.

Answer 7

Multitenancy

Question 8

The 4 basics of cloud computing are:

Answer 8

Scalability
Elasticity
Multitenancy
Security Implications

Question 9

There are several ways to have or access Virtual Machines or Cloud Services where we don’t have to create or even purchase. Like in a pyramid form they are:

Answer 9

Infrastructure as a Service ( IaaS ) - enable you to set-up whole infrastructures for you without the on-site resources, manintenance, and troubleshooting ( most popular )
Platform as a Service ( PaaS ) - for developers can create things like web apps without all the overhead, provides a complete deployment and management system - Heroku.com
Software as a Service ( SaaS ) - provides subscription-based access to software
Desktop as a Service ( DaaS ) - basically allow you to move user’s workstations in the cloud

Question 10

There are several variation when it comes to cloud ownership:

Answer 10

Private - members only
Public
Community - where several organizations put in to create one big cloud ( also a members only
Hybrid - where a private cloud has contracted management

Question 11

This is the management of infrastructure in a descriptive model, using the same versioning as developers use for source code:

Answer 11

Infrastructure as Code ( IAC )

Question 12

Regarding IAC, ___________ is using code to set up or provision and maintain systems in a consistent manner without having to make manual changes.

Answer 12

Automation

Question 13

Regarding IAC, __________ is composing smaller automated tasks into longer sequences

Answer 13

Orchestration

Question 14

_________ enables access to a software development platform without the need to personally host it

Answer 14

PaaS or Platform as a Service

Question 15

A _________ allows very quick access to software running live on the internet.

Answer 15

PaaS or Platform as a Service

Question 16

A ______ ________Connects to a NIC in order to connect to a physical network. They can detect which VM’s are logically connected to its virtual ports and forwards network traffic to the VM.

Answer 16

Virtual Switch

Question 17

the centralized handling and management of virtual switches (done by the hypervisor)

Answer 17

Distributed Switching

Question 18

Basically an architecture or collection of patterns that generally describe how to create a network, basically enables virtualization of network hardware

Answer 18

Network function virtualization ( NFV )

Question 19

In SDN Routers, switches, or a basic network box has:

Answer 19

Management plane / layer -
application plane/layer - one computer with web interface
control plane/layer - sets up acl’s, router info
infrastructure plane/layer - gets the data delivered (mediums)
data plane/layer or forwarding plane

Question 19

This virtualization controls a device from a remote location by replacing the control plane:

Answer 19

Software-defined networking ( SDN )

Question 20

_______ depends on the services requested, including IaaS, and PaaS

Answer 20

Virtual private Cloud or VPC / like AWS