OBJ 1.8 X

Question 1

Public

Answer 1

Systems and users interact with devices on public networks, such
as the Internet and other clouds

Question 2

Private

Answer 2

Systems and users only have access with other devices inside the
same private cloud or system

Question 3

Hybrid

Answer 3

Combination of private and public

Question 4

Community

Answer 4

Collaborative effort where infrastructure is shared between
several organizations from a specific community with common
concerns

Question 5

Software as a service (SaaS)

Answer 5

▪ User interacts with a web-based application
▪ Details of how it works are hidden from users
▪ Examples:
● Google Docs
● Office 365

Question 6

Infrastructure as a service (IaaS)

Answer 6

▪ Allows outsourcing of the infrastructure of the servers or desktops to a
service provider
▪ Hosted off-site at the service provider’s data center and the customer is billed for usage
▪ Charged by hours, processing power, or bandwidth used like utility
services
▪ Examples
● Amazon Web Services (AWS)
● Microsoft’s Azure

Question 7

Platform as a service (PaaS)

Answer 7

▪ Provides a development platform for companies that are developing
applications without the need for infrastructure
▪ Dion Training uses PaaS for our courses
▪ Examples:
▪ Pivotal
● OpenShift
● Apprenda

Question 8

Desktop as a service (DaaS)

Answer 8

▪ Provides a desktop environment that is accessible through the Internet in the form of a cloud desktop or virtual desktop environment
● Virtual Desktop Infrastructure (VDI)

Question 9

Virtual private network (VPN)

Question 10

Multitenancy

Answer 10

Allowing customers to share computing resources in a public or private
cloud
● Better storage/access
● Better use of resources
● Lower overall cost

Question 11

Elasticity

Answer 11

▪ Attempts to match the resources allocated with the actual amount of
resources needed at any given point in time
▪ Elasticity is focused on meeting the sudden increases and decreases
in the workload

Question 12

Scalability