Virtualization and Cloud Computing

Question 1

Cloud computing

Answer 1

-Server hosted elsewhere
-Extend the management of applications and services
-Deploy an infrastructure in minutes
-International scope
-Use only the required resources (cost is based on amount of use)

Question 2

Private cloud deployment

Answer 2

-Your own virtualization local data center

Question 3

Public cloud deployment

Answer 3

-Available to everyone over the internet

Question 4

Hybrid cloud deployment

Answer 4

-A mix of private and public

Question 5

Community cloud deployment

Answer 5

-Several organizations share the same resources

Question 6

IaaS

Answer 6

-Infrastructure as a Service
-Sometimes called Hardware as a Service (HaaS)
-Outsource your equipment
-You’re still responsible for the management and the security
-Your data is out there but more within your control
-Web server providers
-Client managed:
Application
Data
Runtime
Middleware
OS
-Provider managed:
Virtualization
Servers
Storage
Networking

Question 7

SaaS

Answer 7

-Software as a Service
-On-demand software (no local installation)
-Central management of data and applications (your data is out there)
-A complete application offering
–No development work required
–Google Mail, Office 365
-Provider Managed:
Application
Data
Runtime
Middleware
OS
Virtualization
Servers
Storage
Networking

Question 8

PaaS

Answer 8

-Platform as a Service
-Someone else handles the platform, you handle the development
-Client managed:
Application
Data
-Provided Managed:
Runtime
Middleware
OS
Virtualization
Servers
Storage
Networking

Question 9

External cloud resources

Answer 9

-Share resources with a public cloud
-Underlying infrastructure owned by a third-party
-Cast may be metered or up-front

Question 10

Metered cloud services

Answer 10

-You pay for what you use
-Cost to store and download

Question 11

Non-metered cloud services

Answer 11

-You pay for a block of storage
-No cost to upload or download

Question 12

Rapid elasticity

Answer 12

-Cloud computing ability to scale up and down as needed
-The cloud enables instant resource provisioning

Question 13

File synchronization in the cloud

Answer 13

-Information can be duplicated across cloud locations

Question 14

Desktop as a Service

Answer 14

-Applications actually run on a remote server
-Virtual Desktop Infrastructure (VDI), DaaS
-Local device is a keyboard, mouse, and screen

Question 15

Virtualization

Answer 15

-One computer, many operating systems
-Separate OS, independent CPU, memory, network, etc all on one computer
-Host-based virtualization
-Stand alone server that hosts virtual machines

Question 16

Hypervisor

Answer 16

-Virtual Machine Manager
-Manages the virtual platform and guest operating systems
-May require a CPU that supports virtualization

Question 17

Resource Requirements for Virtualization

Answer 17

-CPU (Intel: Virtualization Technology VT/ AMD-V)
-Memory - above and beyond host OS requirements
-Disk space - each guest OS has it’s own image
-Network - Configurable on each guest OS/virtual switch

Question 18

Sandboxing

Answer 18

-Isolated testing environment
-Virtualize development process

Question 19

Hypervisor security

Answer 19

-Malware can recognize it’s on a vm and compromise the hypervisor and jump to different vm’s through the hypervisor

Question 20

Network requirements for virtualization

Answer 20

-Shared network address
-The virtual machine shares the same IP address as the physical host
-Uses a private IP address internally
-Uses NAT to convert to the physical host IP
-Bridged network access
–The VM is a device on the physical network
-Private address
–The VM does not communicate outside of the virtual network